10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

ý	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
	EXCHANGE ACT OF 1934

For the fiscal year ended September 30, 2017

OR

¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
	EXCHANGE ACT OF 1934

For the transition period from to .

Commission File No. 0-121

KULICKE AND SOFFA INDUSTRIES, INC.

(Exact name of registrant as specified in its charter) 

PENNSYLVANIA	23-1498399
(State or other jurisdiction of incorporation)	(IRS Employer Identification No.)
23A Serangoon North Avenue 5, #01-01 K&S Corporate Headquarters, Singapore	554369
(Address of principal executive offices)	(Zip Code)

(215) 784-6000

(Registrants telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

None

Securities registered pursuant to Section 12(g) of the Act:

COMMON STOCK, WITHOUT PAR VALUE

(Title of each class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ý

 No ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ¨ No ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer x	Accelerated filer ¨
Non-accelerated filer ¨	(Do not check if a smaller reporting company)
	Smaller reporting company ¨
	Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No ý

As of March 31, 2017, the aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximately $1,442.2 million based on the closing sale price as reported on The NASDAQ Global Market (reference is made to Part II, Item 5 herein for a statement of assumptions upon which this calculation is based).

As of November 14, 2017 there were 70,603,793 shares of the registrant's common stock, without par value, outstanding.

Documents Incorporated by Reference

Portions of the registrant's Proxy Statement for the 2018 Annual Meeting of Shareholders to be filed on or about January 25, 2018 are incorporated by reference into Part II, Item 5 and Part III, Items 10, 11, 12, 13 and 14 herein of this Report. Such Proxy Statement, except for the parts therein which have been specifically incorporated by reference, shall not be deemed “filed” for the purposes of this Report on Form 10-K.

Table of Contents

KULICKE AND SOFFA INDUSTRIES, INC.

 2017 Annual Report on Form 10-K

September 30, 2017

 Index

		Page Number
	Part I
Item 1.	Business	1
Item 1A.	Risks Related to Our Business and Industry	12
Item 1B.	Unresolved Staff Comments	22
Item 2.	Properties	22
Item 3.	Legal Proceedings	23
Item 4.	Mine Safety Disclosures	23
	Part II
Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	23
Item 6.	Selected Consolidated Financial Data	24
Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations	26
Item 7A.	Quantitative and Qualitative Disclosures about Market Risk	40
Item 8.	Financial Statements and Supplementary Data	41
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	78
Item 9A.	Controls and Procedures	78
Item 9B.	Other Information	79
	Part III
Item 10.	Directors, Executive Officers and Corporate Governance	80
Item 11.	Executive Compensation	80
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	80
Item 13.	Certain Relationships and Related Transactions and Director Independence	80
Item 14.	Principal Accounting Fees and Services	81
	Part IV
Item 15.	Exhibits and Financial Statement Schedules	82
	Signatures	86

Table of Contents

PART I

Forward-Looking Statements

In addition to historical information, this filing contains statements relating to future events or our future results. These statements are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and are subject to the safe harbor provisions created by statute. Such forward-looking statements include, but are not limited to, our future revenue, increasing, continuing or strengthening, or decreasing or weakening, demand for our products, replacement demand, our research and development efforts, our ability to identify and realize new growth opportunities, our ability to control costs and our operational flexibility as a result of (among other factors):

• projected growth rates in the overall semiconductor industry, the semiconductor assembly equipment market, and the market for semiconductor packaging materials; and

• projected demand for ball, wedge bonder, advanced packaging and electronic assembly equipment and for tools, spares and services.

Generally, words such as “may,” “will,” “should,” “could,” “anticipate,” “expect,” “intend,” “estimate,” “plan,” “continue,” “goal” and “believe,” or the negative of or other variations on these and other similar expressions identify forward-looking statements. These forward-looking statements are made only as of the date of this filing. We do not undertake to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise.

Forward-looking statements are based on current expectations and involve risks and uncertainties. Our future results could differ significantly from those expressed or implied by our forward-looking statements. These risks and uncertainties include, without limitation, those described below and under the heading “Risk Factors” in this Annual Report on Form 10-K for the fiscal year ended September 30, 2017 (the “Annual Report”) and our other reports and registration statements filed from time to time with the Securities and Exchange Commission. This discussion should be read in conjunction with the Consolidated Financial Statements and Notes included in this report, as well as our audited financial statements included in the Annual Report.

We operate in a rapidly changing and competitive environment. New risks emerge from time to time and it is not possible for us to predict all risks that may affect us. Future events and actual results, performance and achievements could differ materially from those set forth in, contemplated by or underlying the forward-looking statements, which speak only as of the date on which they were made. Except as required by law, we assume no obligation to update or revise any forward-looking statement to reflect actual results or changes in, or additions to, the factors affecting such forward-looking statement. Given those risks and uncertainties, investors should not place undue reliance on forward-looking statements as predictions of actual results.

Item 1. BUSINESS

Kulicke and Soffa Industries, Inc. ("We", the "Company" or "K&S") designs, manufactures and sells capital equipment and tools used to assemble semiconductor devices, including integrated circuits (“ICs”), high and low powered discrete devices, light-emitting diodes (“LEDs”), and power modules. We also service, maintain, repair and upgrade our equipment. Our customers primarily consist of semiconductor device manufacturers, integrated device manufacturers (“IDMs”), outsourced semiconductor assembly and test providers (“OSATs”), other electronics manufacturers and automotive electronics suppliers.

K&S was incorporated in Pennsylvania in 1956. Our principal offices are located at 23A Serangoon North Avenue 5, #01-01, Singapore 554369 and our telephone number in the United States is (215) 784-6000. We maintain a website with the address www.kns.com. We are not including the information contained on our website as a part of, or incorporating it by reference into, this filing. We make available free of charge (other than an investor's own Internet access charges) on or through our website our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to these reports, as soon as reasonably practicable after the material is electronically filed with or otherwise furnished to the Securities and Exchange Commission (“SEC”). Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports are also available on the SEC website at www.sec.gov and at the SEC's Public Reference Room at 100 F Street, NE, Washington, DC 20549 or by calling the SEC at 1-800-SEC-0330.

Our year end for each of fiscal 2017, 2016 and 2015 was September 30, 2017, October 1, 2016, and October 3, 2015, respectively.

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Key Events in Fiscal 2017

Impairment Charges

During the third quarter of fiscal 2017, the Company concluded that a triggering event had occurred in connection with the EA/APMR reporting unit (the former Assembléon) based on the results of an updated long-term financial outlook for that business that was conducted as part of the Company’s strategic review due to lower demand as compared to forecast. The projection used in the fiscal 2016 annual impairment test had been developed based on the fiscal 2016 actual results, where the actual revenue had exceeded the forecast. This updated outlook projected that the near-term projected cash flows are expected to be lower than previously forecasted due to softer near-term demand in the System-in-package market. Under ASC 350, the Company is required to test its goodwill and intangible assets for impairment annually or when a triggering event has occurred that would indicate it is more likely than not that the fair value of the reporting unit is less than its carrying value including goodwill and intangible assets. Accordingly, the Company has performed the first step of the goodwill impairment test for the EA/APMR reporting unit.

The Company used a discounted cash flow model to determine the fair value of the EA/APMR reporting unit. The cash flow projections used in the discounted cash flow model were prepared using the forecasted financial results of the reporting unit, which was based upon underlying estimates of the total market size using independent third party industry reports, and market share data developed using the combination of independent third party data and our internal data. Significant assumptions used to determine fair value of the EA/APMR reporting unit include terminal growth rate of 2.5%, cost reduction initiatives including restructuring, working capital, tax rate and a weighted average cost of capital (discount rate) of 10.45%. Our calculation of the estimated fair value of goodwill was based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable. Any changes in the assumptions may result in additional impairment.

Following the Company's early adoption in the third quarter of fiscal 2017 of ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment (i.e. Step 2 of the goodwill impairment test) was eliminated. Accordingly, the Company's impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value. Based on the calculation, the Company determined that the carrying amount of the EA/APMR reporting unit exceeded its fair value by $35.2 million as of July 1, 2017, requiring an impairment charge of this amount. The goodwill impairment charge, which is a non-cash charge, has been reflected in the Company’s Consolidated Statements of Operations for fiscal 2017.

In connection with the evaluation of the goodwill impairment in the EA/APMR reporting unit, the Company assessed tangible and intangible assets for impairment prior to performing the first step of the goodwill impairment test. As a result of this analysis, it was determined that there were no impairment charges to record relating to these assets.

Business Combinations

On July 2, 2017, Kulicke and Soffa Holland Holdings B.V. (“KSHH”), the Company's wholly owned subsidiary, entered into a Share Sale and Purchase Agreement (the “Agreement”) with the shareholders of Liteq to purchase all of the outstanding equity interests of Liteq. Liteq is a lithography solutions provider for advanced packaging.

The purchase price consisted of EUR 25.0 million (approximately $28.6 million) cash paid at closing and additional potential earn-out payments based on Liteq's cumulative pre-tax earnings and cumulative engineering expenses for 2018 to 2022. The acquisition expands the Company's presence in the advanced packaging market.

Share Repurchase Program

On August 15, 2017, the Company announced that it fully executed its $100 million share repurchase program (the "Program"), originally announced on August 27, 2014. In addition, the Company announced that its Board of Directors approved a new share repurchase program (the "New Program") that authorizes the repurchase of up to $100 million of the Company's common shares, from time to time over the three year period ending August 1, 2020. The Company may purchase shares of its common stock through open market and privately negotiated transactions at prices deemed appropriate by management. The Company has entered into a written trading plan under Rule 10b5-1 of the Exchange Act to facilitate repurchases under the New Program. The New Program is effective immediately, may be suspended or discontinued at any time and will be funded using the Company's available cash, cash equivalents and short-term investments. The timing and amount of repurchase transactions under the New Program depend on market conditions as well as corporate and regulatory considerations. During the year ended September 30, 2017, the Company repurchased a total of 0.9 million shares of common stock at a cost of $18.2 million. As of September 30, 2017, our remaining share repurchase authorization under the New Program was approximately $88.8 million.

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Segments

During the fourth quarter of fiscal 2017, we reorganized our reporting structure into two reportable segments consisting of: (i) Capital Equipment; and (ii) Aftermarket Products and Services ("APS"). Subsequently, we recasted financial results for fiscal years 2017, 2016 and 2015 based on the revised segment structure. The change in the segments was a result of changes to our organizational structure effected during the fourth quarter of fiscal 2017 to streamline business operations to improve profitability and competitiveness and reflects a change in the manner in which our chief operating decision maker reviews information to assess our performance and make decisions about resource allocation. As part of these actions, we transitioned to a new internal management structure whereby the operating management responsible for tools used to assemble semiconductor devices, including integrated circuits (“ICs”), high and low powered discrete devices, light-emitting diodes (“LEDs”) and power modules, services, spares, maintenance, repair and upgrading operating segments, was brought under common leadership in the APS segment. Subsequent to the reorganization, the Capital Equipment segment comprises of the manufacturing and selling of ball bonders, wafer level bonders, wedge bonders, advanced packaging and electronic assembly solutions to semiconductor device manufacturers, IDMs, OSATs, other electronics manufacturers and automotive electronics suppliers.

For further information on our operating segments and the reorganization actions, please refer to Note 15, "Segment Information," to our Consolidated Financial Statements included under "Item 8, Financial Statements and Supplementary Data" of this Form 10-K. Our prior period reportable segment information has been recasted to reflect the current segment structure and conform to the current period presentation.

Business Environment

The semiconductor business environment is highly volatile and is driven by internal dynamics, both cyclical and seasonal, in addition to macroeconomic forces. Over the long term, semiconductor consumption has historically grown, and is forecast to continue to grow. This growth is driven, in part, by regular advances in device performance and by price declines that result from improvements in manufacturing technology. In order to exploit these trends, semiconductor manufacturers, both IDMs and OSATs, periodically invest aggressively in latest generation capital equipment. This buying pattern often leads to periods of excess supply and reduced capital spending—the so-called semiconductor cycle. Within this broad semiconductor cycle there are also, generally weaker, seasonal effects that are specifically tied to annual, end-consumer purchasing patterns. Typically, semiconductor manufacturers prepare for heightened demand by adding or replacing equipment capacity by the end of the September quarter. Occasionally, this results in subsequent reductions in the December quarter. This annual seasonality can be overshadowed by effects of the broader semiconductor cycle. Macroeconomic factors also affect the industry, primarily through their effect on business and consumer demand for electronic devices, as well as other products that have significant electronic content such as automobiles, white goods, and telecommunication equipment.

Our Capital Equipment segment is primarily affected by the industry's internal cyclical and seasonal dynamics in addition to broader macroeconomic factors that can positively and negatively affect our financial performance. The sales mix of IDM and OSAT customers in any period also impacts financial performance, as changes in this mix can affect our products' average selling prices and gross margins due to differences in volume purchases and machine configurations required by each customer type.

Our APS segment is less volatile than our Capital Equipment segment. APS sales are more directly tied to semiconductor unit consumption rather than capacity requirements and production capability improvements. 

We continue to position our business to leverage our research and development leadership and innovation and to focus our efforts on mitigating volatility, improving profitability and ensuring longer-term growth. We remain focused on operational excellence, expanding our product offerings and managing our business efficiently throughout business cycles. Our visibility into future demand is generally limited, forecasting is difficult, and we generally experience typical industry seasonality.

To limit potential adverse cyclical, seasonal and macroeconomic effects on our financial position, we have continued our efforts to maintain a strong balance sheet. As of September 30, 2017, our total cash, cash equivalents, restricted cash and short-term investments were $608.9 million, a $61.0 million increase from the prior fiscal year end. We believe this strong cash position will allow us to continue to invest in product development and pursue non-organic opportunities.

Technology Leadership

We compete largely by offering our customers advanced equipment and tools available for the interconnect processes. We believe our technology leadership contributes to the strong market positions of our ball bonder, wedge bonder and tools products. To maintain our competitive advantage, we invest in product development activities designed to produce improvements to existing products and to deliver next-generation products. These investments often focus as much on improvements in the semiconductor assembly process as on specific pieces of assembly equipment or tools. In order to generate these improvements, we typically

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work in close collaboration with customers, end users, and other industry members. In addition to producing technical advances, these collaborative development efforts strengthen customer relationships and enhance our reputation as a technology leader and solutions provider.

In addition to gold, silver alloy wire and aluminum wire, our leadership in the industry's use of copper wire for the bonding process is an example of the benefits of our collaborative efforts. By working with customers, material suppliers, and other equipment suppliers, we have developed a series of robust, high-yielding production processes, which have made copper wire widely accepted and significantly reduced the cost of assembling an integrated circuit.

Our leadership also has allowed us to maintain a competitive position in the latest generations of gold and copper ball bonders, which enables our customers to handle the leading technologies in terms of bond pad pitch, silicon with the latest node and complex wire bonding requirement. We continue to see demand for our large bondable area (“LA” and “ELA”) configured machines. Both LA and ELA options are now available on all of our Power Series (^“PS”) models and allow our customers to gain added efficiencies and to reduce the cost of packaging.

We optimize our bonder platforms to deliver variants of our products to serve emerging high-growth markets. For example, we have developed extensions of our main ball bonding platforms (IConn^PSMEM PLUS) to address opportunities in memory assembly, in particular for NAND Flash storage.   

Our leading technology for wedge bonder equipment uses ribbon or heavy wire for different applications such as power electronics, automotive and semiconductor applications. The advanced interconnect capabilities of PowerFusion^PS improve the processing of high-density power packages, due to an expanded bondable area, wider leadframe capability, indexing accuracy and teach mode. In all cases, we are making a concerted effort to develop commonality of subsystems and design practices, in order to improve performance and design efficiencies. We believe this will benefit us as it will increase synergies between the various engineering product groups. Furthermore, we continually research adjacent market segments where our technologies could be used. Many of these initiatives are in the early stages of development and some have yielded results.

Another example of our developing equipment for high-growth niche markets is our AT Premier PLUS. This machine utilizes a modified wire bonding process to mechanically place bumps on devices in a wafer format, for variants of the flip chip assembly process. Typical applications include complementary metal-oxide semiconductor (“CMOS”) image sensors, surface acoustical wave (“SAW”) filters and high brightness LEDs. These applications are commonly used in most, if not all, smartphones available today in the market. We also have expanded the use of AT Premier PLUS for wafer level wire bonding for micro-electro-mechanical systems (“MEMS”) and other sensors.

Our technology leadership and bonding process know-how have enabled us to develop highly function-specific equipment with high throughput and accuracy. This forms the foundation for our advanced packaging equipment development. We established a dedicated team to develop and manufacture advanced packaging bonders for the emerging 2.5 dimensional integrated circuit (“2.5D IC”) and 3 dimensional integrated circuit (“3D IC”) markets. By reducing the interconnect dimensions, 2.5D ICs and 3D ICs are expected to provide form factor, performance and power efficiency enhancements over traditional flip-chip packages in production today. High-performance processing and memory applications, in addition to mobile devices such as smartphones and tablets, are anticipated to be earlier adopters of this new packaging technology.

We have also broadened our advanced packaging solutions for mass reflow to include flip chip, wafer level packaging ("WLP"), fan-out wafer level packaging ("FOWLP"), advanced package-on-package, embedded die, and System-in-Package ("SiP"). These solutions enable us to diversify our business while further expanding market reach into the automotive, LED lighting, medical and industrial segments with electronic assembly solutions.

We bring the same technology focus to our tools business, driving tool design and manufacturing technology to optimize the performance and process capability of the equipment in which our tools are used. For all our equipment products, tools are an integral part of their process capability. We believe our unique ability to simultaneously develop both equipment and tools is a core strength supporting our products' technological differentiation.

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Products and Services

The Company operates two segments: Capital Equipment and APS. The following table reflects net revenue by segment for fiscal 2017, 2016, and 2015:

	Fiscal
	2017				2016				2015
(dollar amounts in thousands)	Net revenues		% of total net revenue		Net revenues		% of total net revenue		Net revenues		% of total net revenue
Capital Equipment	$	651,934	80.6	%	$	488,925	78.0	%	$	411,099	76.6	%
APS	157,107		19.4	%	138,267		22.0	%	125,372		23.4	%
	$	809,041	100.0	%	$	627,192	100.0	%	$	536,471	100.0	%

See Note 15 to our Consolidated Financial Statements included in Item 8 of this report for our financial results by segment.

Capital Equipment Segment

In our Capital Equipment segment, we manufacture and sell a line of ball bonders, wafer level bonders, wedge bonders, advanced packaging and electronic assembly solutions that are sold to semiconductor device manufacturers, IDMs, OSATs, other electronics manufacturers and automotive electronics suppliers.

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Our principal Capital Equipment segment products include:

Business Unit	Product Name (1)	Typical Served Market
Ball bonders	IConnPSPLUS series (2) (3) (4)	Advanced and ultra fine pitch applications
	IConnPS ProCu PLUS series(2) (3) (4)	High-end copper wire applications demanding advanced process capability and high productivity
	IConnPS MEM PLUS series (2) (3) (4)	Memory applications
	ConnXPSPLUS series (2) (3) (4)	Bonder for low-to-medium pin count applications
	ConnXPS LED PLUS	LED applications
Wedge bonders	3600PLUS	Power hybrid and automotive modules using either heavy aluminum wire or PowerRibbon®
	3700PLUS	Hybrid and automotive modules using thin aluminum wire
	PowerFusionPS  TL	Power semiconductors using either aluminum wire or PowerRibbon®
	PowerFusionPS  HL	Smaller power packages using either aluminum wire or PowerRibbon®
	AsterionTM	Power hybrid and automotive modules with larger area using heavy and thin aluminum
	AsterionTM EV	Extended area for battery bonding and dual lane hybrid module bonding
Advanced Packaging	AT Premier PLUS	Advanced wafer level bonding application
	APAMA C2S	Thermo-compression for chip-to-substrate, chip-to-chip and high accuracy flip chip ("HA FC") bonding applications
	APAMA C2W	Thermo-compression for chip-to-wafer, HA FC and high density fan-out wafer level packaging ("HD FOWLP") bonding applications
	APAMA DA	High performance and productivity die attach bonder for single or stack die bonding
	LITEQ 500A	Lithographic stepper for the formation of redistribution layer ("RDL") in FOWLP, fan-in wafer level packaging ("FIWLP") and flip chip ("FC")
	LITEQ 500B	Lithographic stepper for the formation of RDL in FOWLP, FIWLP and FC with higher throughput
	Hybrid Series	Advanced packages assembly applications requiring high throughput such as flip chip, WLP, FOWLP, embedded die, SiP, package-on-package ("POP"), and modules

(1) Power Series (“PS”)

(2) Standard version

(3) Large area version

(4) Extended large area version

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Business Unit	Product Name (1)	Typical Served Market
Electronics Assembly	iX Series	Advanced Surface Mount Technology ("SMT") applications requiring extremely high output of passive and active components
	iFlex Series	Advanced SMT applications requiring multi-lane or line balancing solutions for standard or oddform passive and active components

Ball Bonders

Automatic ball bonders represent the largest portion of our semiconductor equipment business. Our portfolio of ball bonding products includes:

• The IConn^PS PLUS series: high-performance ball bonders which can be configured for either gold or copper wire.

• The IConn^PS ProCu PLUS series: high-performance copper wire ball bonders for advanced wafer.

• The IConn^PSMEM PLUS series: ball bonders designed for the assembly of stacked memory devices.

• The ConnX^PSPLUS series: cost-performance ball bonders which can be configured for either gold or copper wire.

• The ConnX^PS LED PLUS: ball bonders targeted specifically at the fast growing LED market.

Our ball bonders are capable of performing very fine pitch bonding, as well as creating the complex loop shapes needed in the assembly of advanced semiconductor packages and bonding on the latest silicon. Most of our installed base of gold wire bonders can also be retrofitted for copper applications through kits we sell separately.

Wedge Bonders

We design and manufacture wedge bonders for the power semiconductor and automotive markets. Wedge bonders may use either aluminum wire or aluminum ribbon to connect semiconductor chips in power packages, power hybrids and automotive modules for products such as motor control modules or inverters for hybrid cars. In addition, our wedge bonder products can be used in the high reliability interconnections of rechargeable batteries in hybrid and electric automotive applications.

Our portfolio of wedge bonding products includes:

• The 3600PLUS:  high speed, high accuracy wire bonders designed for power modules, automotive packages and other heavy wire multi-chip module applications.

• The 3700PLUS: wire bonders designed for hybrid and automotive modules using thin aluminum wire.

• The PowerFusion^PS Semiconductor Wedge Bonders - Configurable in single, dual and multi-head configurations using aluminum wire and PowerRibbon^®:

◦ The PowerFusion^PSTL: designed for single row leadframe and high volume power semiconductor applications.

◦ The PowerFusion^PSHL and PowerFusion^PSHLx: designed for advanced power semiconductor applications.

• The Asterion^TM and Asterion^TM EV: Hybrid wedge bonder designed for larger area, higher speed and accuracy wedge bonders for power modules, automotive packages, battery applications and other aluminum wedge interconnect applications.

While wedge bonding traditionally utilizes aluminum wire, all of our wedge bonders may be modified to bond aluminum ribbon using our proprietary PowerRibbon^® process. Aluminum ribbon offers device makers performance advantages over traditional round wire and is increasingly used for high current packages and automotive applications.

Our PowerFusion^PSseries are driven by new powerful direct-drive motion systems and expanded pattern recognition capabilities. PowerFusion^PSseries improve the processing of high-density power packages, due to an expanded bondable area, wider leadframe capability, indexing accuracy and teach mode.

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Advanced Packaging

Our AT Premier PLUS utilize a modified wire bonding process to mechanically place bumps on devices, while still in a wafer format for variants of the flip chip assembly process. Typical applications include CMOS image sensors, SAW filters, MEMS and high brightness LEDs. These applications are commonly used in most, if not all, smartphones available today in the market.

Our APAMA (Advanced Packaging with Adaptive Machine Analytics) C2S (chip-to-substrate) bonder is designed for high accuracy and high throughput flip chip, thermo-compression bonding ("TCB") applications. It delivers die-stacking solutions for 2.5D and 3D or through silicon via ("TSV") ICs.

Our APAMA Chip-to-Wafer (“C2W”) bonder enables APAMA's high throughput architecture to be applied to 2.5D and 3D packages using silicon or glass interposers. The C2W dual head system also provides an adaptable manufacturing platform addressing applications which require highly accurate die placement such as High Density FOWLP. The C2W platform, combined with the capacity of the C2S platform, enables the APAMA TCB systems to support assembly for the full range of stacked TSV products.

Our APAMA DA provides high-accuracy and high-throughput die attach targeting advanced single and multi-die applications supporting the image sensor, memory as well as other advanced packaging markets.

With the acquisition of Liteq, we have broadened our product offering with Lithographic stepper typically used for the formation of RDL in FOWLP, FIWLP and FC.

Electronic Assembly

Our iX and iFlex series machines enable us to diversify our business with SMT placement technologies, thereby expanding market reach into the automotive, LED lighting, medical and industrial segments with Electronic Assembly solutions.

APS Segment

In our APS segment, we manufacture and sell a variety of tools for a broad range of semiconductor packaging applications. Our principal APS segment products include:

• Capillaries:  expendable tools used in ball bonders. Made of ceramic and other elements, a capillary guides the wire during the ball bonding process. Its features help control the bonding process. We design and build capillaries suitable for a broad range of applications, including for use on our competitors' equipment. In addition to capillaries used for gold wire bonding, we have developed capillaries for use with copper wire to achieve optimal performance in copper wire bonding.

• Dicing blades:  expendable tools used by semiconductor manufacturers to cut silicon wafers into individual semiconductor die or to cut packaged semiconductor units into individual units.

• Bonding wedges:  expendable tools used in heavy wire wedge bonders. Wedge tools are used for both wire and ribbon applications.

We also offer spare parts, equipment repair, maintenance and servicing, training services, and upgrades for our equipment.

Our K&S Care service is designed to help customers operate their machines at an optimum level under the care of our trained specialists. K&S Care includes a range of programs, offering different levels of service depending on customer needs.

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Customers

Our major customers include IDMs and OSATs, industrial manufacturers and automotive electronics suppliers. Revenue from our customers may vary significantly from year-to-year based on their respective capital investments, operating expense budgets, and overall industry trends.

The following table reflects our top ten customers, based on net revenue, for each of the last three fiscal years:

	Fiscal 2017		Fiscal 2016		Fiscal 2015
1	Haoseng Industrial Co., Ltd. *#	1	Haoseng Industrial Co., Ltd. *#	1	Amkor Technology Inc.
2	Siliconware Precision Industries Ltd.	2	Siliconware Precision Industries Ltd.	2	Haoseng Industrial Co., Ltd. #
3	Advanced Semiconductor Engineering	3	Advanced Semiconductor Engineering	3	Skyworks Solutions Incorporated
4	Amkor Technology Inc.	4	STATS Chippac Ltd	4	ST Microelectronics
5	Super Power International Ltd #	5	Powertech Technology Inc.	5	Renesas Semiconductor
6	Samsung	6	Amkor Technology Inc.	6	First Technology China, Ltd. #
7	First Technology China, Ltd. #	7	Orient Semiconductor Electronics, Ltd.	7	Orient Semiconductor Electronics, Ltd.
8	LG Innotek Co. Ltd.	8	First Technology China, Ltd. #	8	Texas Instruments, Inc.
9	Texas Instruments, Inc.	9	Samsung	9	Rohm Integrated Systems
10	Xinye Electronics. Co #	10	Tesla Motors	10	Xinye Electronics. Co #

* Represents more than 10% of our net revenue for the applicable fiscal year.

# Distributor of our products.

See Note 15 to our Consolidated Financial Statements included in Item 8 of this report for sales to customers by geographic location.

Sales and Customer Support

We believe long-term customer relationships are critical to our success, and comprehensive sales and customer support are an important means of establishing those relationships. To maintain these relationships, we primarily utilize our direct sales force, as well as distribution channels such as agents and distributors, depending on the product, region, or end-user application. In all cases, our goal is to position our sales and customer support resources near our customers' facilities so as to provide support for customers in their own language and consistent with local customs. Our sales and customer support resources are located primarily in Singapore, Taiwan, China, Korea, Malaysia, the Philippines, Japan, Thailand, the U.S., Germany, Mexico and the Netherlands. Supporting these local resources, we have technology centers offering additional process expertise in Singapore, China, Israel, the U.S and the Netherlands.

By establishing relationships with semiconductor manufacturers, OSATs, and vertically integrated manufacturers of electronic systems, we gain insight into our customers' future semiconductor packaging strategies. In addition, we also send our products and equipment to customers or potential customers for trial and evaluation. These insights assist us in our efforts to develop products and processes that address our customers' future assembly requirements.

Backlog

Our backlog consists of customer orders scheduled for shipment within the next twelve months. A majority of our orders are subject to cancellation or deferral by our customers with limited or no penalties. Also, customer demand for our products can vary dramatically without prior notice. Because of the volatility of customer demand, possibility of customer changes in delivery schedules or cancellations and potential delays in product shipments, our backlog as of any particular date may not be indicative of net revenue for any succeeding period.

The following table reflects our backlog as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017		October 1, 2016
Backlog	$	190,702	$	87,200

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Manufacturing

We believe excellence in manufacturing can create a competitive advantage, both by producing at lower costs and by providing superior responsiveness to changes in customer demand. To achieve these goals, we manage our manufacturing operations through a single organization and believe that fewer, larger factories allow us to capture economies of scale and generate cost savings through lower manufacturing costs.

Capital Equipment

Our equipment manufacturing activities consist mainly of integrating outsourced parts and subassemblies and testing finished products to customer specifications. We largely utilize an outsource model, allowing us to minimize our fixed costs and capital expenditures. For certain low-volume, high customization parts, we manufacture subassemblies ourselves. Just-in-time inventory management has reduced our manufacturing cycle times and lowered our on-hand inventory requirements. Raw materials used in our equipment manufacturing are generally available from multiple sources; however, many outsourced parts and components are only available from a single or limited number of sources.

Our ball bonder, wedge bonder and APAMA bonder manufacturing and assembly is done at our facility in Singapore. Our Hybrid and Electronic Assembly solutions manufacturing and assembly is done at our facility in the Netherlands. We have ISO 9001 and ISO 14001 certifications for our equipment manufacturing facilities in Singapore and the Netherlands.

Aftermarket Products and Services

We manufacture dicing blades, capillaries and a portion of our bonding wedge inventory at our facility in Suzhou, China. The capillaries are made using blanks produced at our facility in Yokneam, Israel. We both produce and outsource the production of our bonding wedges. Both the Suzhou and Yokneam facilities are ISO 9001 certified. The Suzhou facility is also ISO 14001 and ISO 18001 certified.

Spares are manufactured at our facilities in Singapore and Netherlands.

Research and Product Development

Many of our customers generate technology roadmaps describing their projected packaging technology requirements. Our research and product development activities are focused on delivering robust production solutions to those projected requirements. We accomplish this by regularly introducing improved versions of existing products or by developing next-generation products. We follow this product development methodology in all our major product lines. Research and development expense was $100.2 million, $92.4 million, and $90.0 million during fiscal 2017, 2016, and 2015, respectively.

Intellectual Property

Where circumstances warrant, we apply for patents on inventions governing new products and processes developed as part of our ongoing research, engineering, and manufacturing activities. We currently hold a number of U.S. patents, many of which have foreign counterparts. We believe the duration of our patents often exceeds the commercial life cycles of the technologies disclosed and claimed in the patents. Additionally, we believe much of our important technology resides in our trade secrets and proprietary software.

Competition

The market for semiconductor equipment and packaging materials products is intensely competitive. Significant competitive factors in the semiconductor equipment market include price, speed/throughput, production yield, process control, delivery time, innovation, quality and customer support, each of which contribute to lower the overall cost per package being manufactured. Our major equipment competitors include:

• Ball bonders: ASM Pacific Technology, Shinkawa Ltd and Kaijo Corporation

• Wedge bonders: ASM Pacific Technology, Cho-Onpa, F&K Delvotec, and Hesse Mechatronics

• AT Premier bonders: ASM Pacific Technology, Shinkawa Ltd and Kaijo Corporation

• APAMA bonders: ASM Pacific Technology, BE Semiconductor Industries N.V., Shibaura Mechatronics Corporation,  Shinkawa Ltd., Toray Industries, Inc, and Hanmi semiconductor Co., Ltd.

• APAMA DA bonders: ASM Pacific Technology, BE Semiconductor Industries N.V., Fasford Technology Co., Ltd, Shinkawa Ltd and Canon Semiconductor Equipment Inc.

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• Lithographic stepper: Ultratech, Inc., Shanghai Micro Electronics Equipment (Group) Co., Ltd., SÜSS MicroTec AG, and Canon Semiconductor Equipment Inc.

• Hybrid solutions: ASM Pacific Technology, BE Semiconductor Industries N.V., , Fuji Machine Mfg. Co., Ltd., and Yamaha Motor Co., Ltd.

• Electronic Assembly solutions: ASM Pacific Technology, Fuji Machine Mfg. Co., Ltd., Panasonic Factory Solutions Co., Ltd., and Yamaha Motor Co., Ltd.

Significant competitive factors in the semiconductor packaging materials industry include performance, price, delivery, product life, and quality. Our significant tools competitors include:

• Capillaries: PECO, and Small Precision Tools, Inc.

• Dicing blades: Disco Corporation and Zhengzhou Shine More Superabrasive Products Co. Ltd

• Bonding wedges: Small Precision Tools, Inc. and DeWeyl Tools, Inc.

In each of the markets we serve, we face competition and the threat of competition from established competitors and potential new entrants, some of which may have greater financial, engineering, manufacturing, and marketing resources.

Environmental Matters

We are subject to various federal, state, local and foreign laws and regulations governing, among other things, the generation, storage, use, emission, discharge, transportation and disposal of hazardous materials and the health and safety of our employees. In addition, we are subject to environmental laws which may require investigation and cleanup of any contamination at facilities we own or operate or at third-party waste disposal sites we use or have used.

We have incurred in the past, and expect in the future to incur costs to comply with environmental laws. We are not, however, currently aware of any material costs or liabilities relating to environmental matters, including any claims or actions under environmental laws or obligations to perform any cleanups at any of our facilities or any third-party waste disposal sites, that we expect to have a material adverse effect on our business, financial condition or operating results. However, it is possible that material environmental costs or liabilities may arise in the future.

Business Continuity Management Plan

We have developed and implemented a global Business Continuity Management Plan ("Plan") for our business operations. The Plan is designed to facilitate the prompt resumption of our business operations and functions arising from an event which impacts or potentially impacts our business operations.  As the scale, timing, and impact of disasters and disruptions are unpredictable, the Plan has been designed to be flexible in responding to actual events as they occur.  The Plan provides a structured framework for safeguarding our employees and property, making a financial and operational assessment, protecting our books and records, perpetuating critical business functions, and enabling the continuation of customer transactions.

Employees

As of September 30, 2017, we had approximately 2,778 regular full-time employees and 277 temporary workers worldwide.

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Item 1A. RISKS RELATED TO OUR BUSINESS AND INDUSTRY

Our operating results and financial condition are adversely impacted by volatile worldwide economic conditions.

Though the semiconductor industry's cycle can be independent of the general economy, global economic conditions may have a direct impact on demand for semiconductor units and ultimately demand for semiconductor capital equipment and tools. Accordingly, our business and financial performance is impacted, both positively and negatively, by fluctuations in the macroeconomic environment. Our visibility into future demand is generally limited and forecasting is difficult. There can be no assurances regarding levels of demand for our products and we believe historic industry-wide volatility will persist.

Unpredictable spending by our customers due to uncertainties in the macroeconomic environment could adversely affect our net revenue and profitability.

We depend upon demand from our customers including IDMs and OSATs, industrial manufacturers and automotive electronics suppliers. Our net revenue and profitability is based upon our customers' anticipated sales. Reductions or other fluctuations in their spending as a result of uncertain conditions in the macroeconomic environment, including from government, economic or fiscal instability, restricted global credit conditions, reduced demand, unbalanced inventory levels, fluctuations in interest rates, higher energy prices, or other conditions, could adversely affect our net revenue and profitability. The impact of general economic slowdowns could make our customers cautious and delay orders until the economic environment becomes clearer.

The semiconductor industry is volatile with sharp periodic downturns and slowdowns. Cyclical industry downturns are made worse by volatile global economic conditions.

Our operating results are significantly affected by the capital expenditures of semiconductor manufacturers, both IDMs and OSATs. Expenditures by our customers depend on the current and anticipated market demand for semiconductors and products that use semiconductors, including mobile devices, personal computers, consumer electronics, telecommunications equipment, automotive components and other industrial products. Significant downturns in the market for semiconductor devices or in general economic conditions reduce demand for our products and can materially and adversely affect our business, financial condition and operating results.

The semiconductor industry is volatile, with periods of rapid growth followed by industry-wide retrenchment. These periodic downturns and slowdowns have adversely affected our business, financial condition and operating results. Downturns have been characterized by, among other things, diminished product demand, excess production capacity, and accelerated erosion of selling prices. Historically these downturns have severely and negatively affected the industry's demand for capital equipment, including assembly equipment and, to a lesser extent, tools. There can be no assurances regarding levels of demand for our products. In any case, we believe the historical volatility of our business, both upward and downward, will persist.

We may experience increasing price pressure.

Typically our average selling prices have declined over time. We seek to offset this decline by continually reducing our cost structure by consolidating operations in lower cost areas, reducing other operating costs, and by pursuing product strategies focused on product performance and customer service. These efforts may not be able to fully offset price declines; therefore, our financial condition and operating results may be materially and adversely affected.

Our quarterly operating results fluctuate significantly and may continue to do so in the future.

In the past, our quarterly operating results have fluctuated significantly. We expect our quarterly results will continue to fluctuate. Although these fluctuations are partly due to the cyclical and volatile nature of the semiconductor industry, they also reflect other factors, many of which are outside of our control.

Some of the factors that may cause our net revenue and operating margins to fluctuate significantly from period to period are:

• market downturns;

• industry inventory level;

• the mix of products we sell because, for example:

◦ certain lines of equipment within our business segments are more profitable than others; and

◦ some sales arrangements have higher gross margins than others;

• cancelled or deferred orders;

• seasonality;

• competitive pricing pressures may force us to reduce prices;

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• higher than anticipated costs of development or production of new equipment models;

• the availability and cost of the components for our products;

• delays in the development and manufacture of our new products and upgraded versions of our products and market acceptance of these products when introduced;

• customers' delay in purchasing our products due to anticipation that we or our competitors may introduce new or upgraded products; and

• our competitors' introduction of new products.

Many of our expenses, such as research and development, selling, general and administrative expenses, and interest expense, do not vary directly with our net revenue. Our research and development efforts include long-term projects lasting a year or more, which require significant investments. In order to realize the benefits of these projects, we believe that we must continue to fund them even during periods when our revenue has declined. As a result, a decline in our net revenue would adversely affect our operating results as we continue to make these expenditures. In addition, if we were to incur additional expenses in a quarter in which we did not experience comparable increased net revenue, our operating results would decline. In a downturn, we may have excess inventory, which could be written off. Some of the other factors that may cause our expenses to fluctuate from period-to-period include:

• timing and extent of our research and development efforts;

• severance, restructuring, and other costs of relocating facilities;

• inventory write-offs due to obsolescence or other causes; and

• an increase in the cost of labor or materials.

Because our net revenue and operating results are volatile and difficult to predict, we believe consecutive period-to-period comparisons of our operating results may not be a good indication of our future performance.

We may not be able to rapidly develop, manufacture and gain market acceptance of new and enhanced products required to maintain or expand our business.

We believe our continued success depends on our ability to continuously develop and manufacture new products and product enhancements on a timely and cost-effective basis. We must introduce these products and product enhancements into the market in a timely manner in response to customers' demands for higher performance assembly equipment and leading-edge materials customized to address rapid technological advances in integrated circuits, and capital equipment designs. Our competitors may develop new products or enhancements to their products that offer improved performance and features, or lower prices which may render our products less competitive. The development and commercialization of new products require significant capital expenditures over an extended period of time, and some products we seek to develop may never become profitable. In addition, we may not be able to develop and introduce products incorporating new technologies in a timely manner that will satisfy our customers' future needs or achieve market acceptance.

The transition from gold to copper wire bonding by our customers and the industry has substantially completed.

Our customers have substantially completed the transition from gold to copper wire bonding. In fiscal 2017, 84% of total ball bonders sold by the Company were copper capable bonders. If our customers transition away from copper wire bonding, there may be a reduced demand for our wire bonders and our financial condition and operating results may be materially and adversely affected.

Substantially all of our sales and manufacturing operations are located outside of the U.S., and we rely on independent foreign distribution channels for certain product lines, all of which subject us to risks, including risks from changes in trade regulations, currency fluctuations, political instability and conflicts.

Approximately 92.9%, 92.4%, and 91.2% of our net revenue for fiscal 2017, 2016, and 2015, respectively, was for shipments to customers located outside of the U.S., primarily in the Asia/Pacific region. In the Asia/Pacific region, our customer base is also becoming more geographically concentrated as a result of economic and industry conditions. Approximately 40.0%, 33.7% and 31.6% of our net revenue for the fiscal 2017, 2016, and 2015was for shipments to customers located inChina.

We expect our future performance to depend on our ability to continue to compete in foreign markets, particularly in the Asia/Pacific region. Some of these economies have been highly volatile, resulting in significant fluctuation in local currencies, and political and economic instability. These conditions may continue or worsen, which may materially and adversely affect our business, financial condition and operating results.

We also rely on non-U.S. suppliers for materials and components used in our products, and substantially all of our manufacturing

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operations are located in countries other than the U.S. We manufacture our ball, wedge and APAMA bonders in Singapore, our Hybrid and Electronic Assembly solutions in the Netherlands, our dicing blades, capillaries and bonding wedges in China and capillary blanks in Israel. In addition, our corporate headquarters is in Singapore and we have sales, service and support personnel in China, Israel, Japan, Korea, Malaysia, the Philippines, Singapore, Taiwan, Thailand, the U.S., Germany, Mexico and the Netherlands. We also rely on independent foreign distribution channels for certain of our product lines. As a result, a major portion of our business is subject to the risks associated with international, and particularly Asia/Pacific, commerce, such as:

• risks of war and civil disturbances or other events that may limit or disrupt manufacturing and markets;

• seizure of our foreign assets, including cash;

• longer payment cycles in foreign markets;

• foreign exchange restrictions and capital controls;

• restrictions on the repatriation of our assets, including cash;

• significant foreign and U.S. taxes on repatriated cash;

• difficulties of staffing and managing dispersed international operations;

• possible disagreements with tax authorities;

• episodic events outside our control such as, for example, outbreaks of influenza or other illnesses;

• natural disasters such as earthquakes, fires or floods;

• tariff and currency fluctuations;

• changing political conditions;

• labor work stoppages and strikes in our factories or the factories of our suppliers;

• foreign governments' monetary policies and regulatory requirements;

• less protective foreign intellectual property laws;

• new laws and regulations; and

• legal systems which are less developed and may be less predictable than those in the U.S.

In addition, there is a potential risk of conflict and instability in the relationship between Taiwan and China. Conflict or instability could disrupt the operations of our customers and/or suppliers in both Taiwan and China. Additionally, our manufacturing operations in China could be disrupted by any conflict.

Our international operations also depend upon favorable trade relations between the U.S. and those foreign countries in which our customers, subcontractors and materials suppliers have operations. A protectionist trade environment in either the U.S. or those foreign countries in which we do business, such as a change in the current tariff structures, export compliance or other trade policies, may materially and adversely affect our ability to sell our products in foreign markets.

Increased labor costs and competition for qualified personnel may reduce the efficiency of our flexible manufacturing model and adversely impact our operating results.

There is some uncertainty with respect to the pace of rising labor costs in the various countries in which we operate. In addition, there is substantial competition in China, Singapore, Israel and the Netherlands for qualified and capable personnel, which may make it difficult for us to recruit and retain qualified employees. If we are unable to staff sufficient personnel at our China, Singapore, Israel and the Netherlands facilities or if there are increases in labor costs that we are unable to recover in our pricing to our customers, we may experience increased manufacturing costs, which would adversely affect our operating results.

We are exposed to fluctuations in currency exchange rates that could negatively impact our financial results and cash flows.

Because most of our foreign sales are denominated in U.S. dollars or Euros, an increase in value of the U.S. dollar or the Euro against foreign currencies will make our products more expensive than those offered by some of our foreign competitors. In addition, a weakening of the U.S. dollar against other currencies other than the Euro could make our costs in non-U.S. locations more expensive to fund. Our ability to compete overseas may therefore be materially and adversely affected by the fluctuations of the U.S. dollar or the Euro against other currencies.

Because nearly all of our business is conducted outside the U.S., we face exposure to adverse movements in foreign currency exchange rates which could have a material adverse impact on our financial results and cash flows. Historically, our primary exposures have related to net working capital exposures denominated in currencies other than the foreign subsidiaries' functional currency, and remeasurement of our foreign subsidiaries' net monetary assets from the subsidiaries' local currency into the subsidiaries' functional currency. In general, an increase in the value of the U.S. dollar could require certain of our foreign subsidiaries

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to record translation and remeasurement gains. Conversely, a decrease in the value of the U.S. dollar could require certain of our foreign subsidiaries to record losses on translation and remeasurement. An increase in the value of the U.S. dollar could increase the cost to our customers of our products in those markets outside the U.S. where we sell in U.S. dollars, and a weakened U.S. dollar could increase the cost of local operating expenses and procurement of raw materials, both of which could have an adverse effect on our cash flows. Our primary exposures include the Singapore Dollar, Chinese Yuan, Japanese Yen, Malaysian Ringgit, Swiss Franc, Philippine Peso, Thai Baht, Taiwan Dollar, South Korean Won, Israeli Shekel and Euro. Although we from time to time have entered into foreign exchange forward contracts to hedge certain foreign currency exposure of our operating expenses, our attempts to hedge against these risks may not be successful and may result in a material adverse impact on our financial results and cash flows.

We may not be able to continue to consolidate manufacturing and other facilities or entities without incurring unanticipated costs and disruptions to our business.

As part of our ongoing efforts to drive further efficiency, we may consolidate our manufacturing and other facilities or entities. Should we consolidate, we may experience unanticipated events, including the actions of governments, suppliers, employees or customers, which may result in unanticipated costs and disruptions to our business.

Our business depends on attracting and retaining management, marketing and technical employees as well as on the succession of senior management.

Our future success depends on our ability to hire and retain qualified management, marketing, finance, accounting and technical employees, including senior management. Experienced personnel with the relevant and necessary skill sets in our industry are in high demand and competition for their talents is intense, especially in Asia, where most of the Company’s key personnel are located. If we are unable to continue to attract and retain the managerial, marketing, finance, accounting and technical personnel we require, our business, financial condition and operating results may be materially and adversely affected.

Effective succession planning is also important to our long-term success. Failure to ensure effective transfer of knowledge and smooth transitions involving senior management could hinder our strategic planning and execution. From time to time, senior management or other key employees may leave our company. While we strive to reduce the negative impact of such changes, the loss of any key employee could result in significant disruptions to our operations, including adversely affecting the timeliness of product releases, the successful implementation and completion of company initiatives, the effectiveness of our disclosure controls and procedures and our internal control over financial reporting, and the results of our operations. In addition, hiring, training, and successfully integrating replacement critical personnel could be time consuming, may cause additional disruptions to our operations, and may be unsuccessful, which could negatively impact future revenues.

Difficulties in forecasting demand for our product lines may lead to periodic inventory shortages or excesses.

We typically operate our business with limited visibility of future demand. As a result, we sometimes experience inventory shortages or excesses. We generally order supplies and otherwise plan our production based on internal forecasts for demand. We have in the past failed, and may again in the future fail, to accurately forecast demand for our products. This has led to, and may in the future lead to, delays in product shipments or, alternatively, an increased risk of inventory obsolescence. If we fail to accurately forecast demand for our products, our business, financial condition and operating results may be materially and adversely affected.

Alternative packaging technologies may render some of our products obsolete and materially and adversely affect our overall business and financial results.

Alternative packaging technologies have emerged that may improve device performance or reduce the size of an integrated circuit package, as compared to traditional wire bonding. These technologies include flip chip and WLP. Some of these alternative technologies eliminate the need for wires to establish the electrical connection between a die and its package. The semiconductor industry may, in the future, shift a significant part of its volume into alternative packaging technologies which do not employ our products. If a significant shift to alternative packaging technologies to a technology not offered by us were to occur, demand for our equipment and related packaging materials may be materially and adversely affected. Given the lack of a significant alternate revenue stream other than wire bonding, a reduced demand for our equipment could materially and adversely affect our financial results.

Because a small number of customers account for most of our sales, our net revenue could decline if we lose a significant customer.

The semiconductor manufacturing industry is highly concentrated, with a relatively small number of large semiconductor manufacturers and their subcontract assemblers and vertically integrated manufacturers of electronic systems purchasing a substantial portion of our semiconductor assembly equipment and packaging materials. Sales to a relatively small number of

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customers have historically accounted for a significant percentage of our net revenue. Sales to our largest customers, which we define as representing more than 10% of our net revenue, comprised 10.1% and 11.5% of our net revenue for fiscal 2017 and fiscal 2016, respectively, and sales to our ten largest customers comprised 47.3% and 47.6% of our net revenue for fiscal 2017 and fiscal 2016, respectively.

We expect a small number of customers will continue to account for a high percentage of our net revenue for the foreseeable future. Thus, our business success depends on our ability to maintain strong relationships with our customers. Any one of a number of factors could adversely affect these relationships. If, for example, during periods of escalating demand for our equipment, we were unable to add inventory and production capacity quickly enough to meet the needs of our customers, they may turn to other suppliers making it more difficult for us to retain their business. If we lose orders from a significant customer, or if a significant customer reduces its orders substantially, these losses or reductions may materially and adversely affect our business, financial condition and operating results.

We maintain a backlog of customer orders that is subject to cancellation, reduction or delay in delivery schedules, which may result in lower than expected revenues.

We manufacture products primarily pursuant to purchase orders for current delivery or to forecast, rather than pursuant to long-term supply contracts. As a result, we must commit resources to the manufacture of products without binding purchase commitments from customers. The semiconductor industry is occasionally subject to double-booking and rapid changes in customer outlooks or unexpected build ups of inventory in the supply channel as a result of shifts in end market demand and macro-economic conditions. Accordingly, many of these purchase orders or forecasts may be revised or canceled without penalty. Even in cases where our standard terms and conditions of sale or other contractual arrangements do not permit a customer to cancel an order without penalty, we may from time to time accept cancellations to maintain customer relationships or because of industry practice, custom or other factors. Our inability to sell products after we devote significant resources to them could have a material adverse effect on both our levels of inventory and revenues. While we currently believe our inventory levels are appropriate for the current economic environment, continued global economic uncertainty may result in lower than expected demand.

We send products and equipment to customers or potential customers for trial, evaluation or other purposes which may result in retrofit charges, impairments or write-down of inventory value if the products and equipment are not subsequently purchased by the customers.

From time to time we send certain products and equipment to customers or potential customers for testing, evaluation or other purposes in advance of receiving any confirmation of purchase or purchase orders. Such equipment may be at the customer location for an extended period of time per the agreements with these customers and potential customers. The customer may refuse to buy all or partial quantities of such product or equipment and return this back to us. As a result, we may incur charges to retrofit the machines or sell the machines as second hand at a lower price, and accordingly may have to record impairments on the returned inventory, all of which would adversely affect our operating results.

Undetected problems in our products could directly impair our financial results.

If flaws in design, production, assembly or testing of our products (by us or our suppliers) were to occur, we could experience a rate of failure in our products that would result in substantial repair, replacement or service costs and potential damage to our reputation. Continued improvement in manufacturing capabilities, control of material and manufacturing quality and costs and product testing are critical factors in our future growth. There can be no assurance that our efforts to monitor, develop, modify and implement appropriate tests and manufacturing processes for our products will be sufficient to permit us to avoid a rate of failure in our products that results in substantial delays in shipment, significant repair or replacement costs or potential damage to our reputation, any of which could have a material adverse effect on our business, results of operations or financial condition.

Costs related to product defect and errata may harm our results of operations and business.

Costs of product defects and errata (deviations from product specifications) due to, for example, problems in our design and manufacturing processes, or those of our suppliers, could include:

• writing off the value of inventory;

• disposing of products that cannot be fixed;

• retrofitting products that have been shipped;

• providing product replacements or modifications; and

• defending against litigation.

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These costs could be large and may increase expenses and lower our operating profits. Our reputation with customers or end users could be damaged as a result of product defects and errata, and product demand could be reduced. These factors could harm our business and financial results.

We depend on our suppliers, including sole source suppliers, for critical raw materials, components and subassemblies. If our suppliers do not deliver their products to us, we would be unable to deliver our products to our customers.

Our products are complex and require raw materials, components and subassemblies having a high degree of reliability, accuracy and performance. We rely on subcontractors to manufacture many of these components and subassemblies and we rely on sole source suppliers for many components and raw materials. As a result, we are exposed to a number of significant risks, including:

• decreased control over the manufacturing process for components and subassemblies;

• changes in our manufacturing processes in response to changes in the market, which may delay our shipments;

• our inadvertent use of defective or contaminated raw materials;

• the relatively small operations and limited manufacturing resources of some of our suppliers, which may limit their ability to manufacture and sell subassemblies, components or parts in the volumes we require and at acceptable quality levels and prices;

• the inability of suppliers to meet customer demand requirements during volatile cycles;

• reliability or quality issues with certain key subassemblies provided by single source suppliers as to which we may not have any short term alternative;

• shortages caused by disruptions at our suppliers and subcontractors for a variety of reasons, including work stoppage or fire, earthquake, flooding or other natural disasters;

• delays in the delivery of raw materials or subassemblies, which, in turn, may delay shipments to our customers;

• loss of suppliers as a result of consolidation of suppliers in the industry; and

• loss of suppliers because of their bankruptcy or insolvency.

If we are unable to deliver products to our customers on time and at expected cost for these or any other reasons, or we are unable to meet customer expectations as to cycle time, or we are unable to maintain acceptable product quality or reliability, our business, financial condition and operating results may be materially and adversely affected.

Regulations related to “conflict minerals” may force us to incur additional expenses, may make our supply chain more complex and may result in damage to our reputation with customers.

In 2012, under the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, or the Dodd-Frank Act, the SEC adopted requirements for companies that use certain minerals and metals, known as conflict minerals, in their products, regardless of whether these products are manufactured by third parties. These requirements require companies to conduct due diligence and disclose whether or not such minerals originate from the Democratic Republic of Congo and certain adjoining countries. These requirements could adversely affect the sourcing, availability and pricing of minerals used in the manufacture of semiconductor devices, including our products. In addition, since our supply chain is complex, we may not be able to sufficiently verify the origins for these minerals and metals used in our products through the due diligence procedures that we implement, which may harm our reputation. In such event, we may also face difficulties in satisfying customers who require that all of the components of our products are certified as conflict mineral free.

We may acquire or divest businesses or enter into joint ventures or strategic alliances, which may materially affect our business, financial condition and operating results.

We continually evaluate our portfolio of businesses and may decide to buy or sell businesses or enter into joint ventures or other strategic alliances. We may be unable to successfully integrate acquired businesses with our existing businesses and successfully implement, improve and expand our systems, procedures and controls to accommodate these acquisitions. These transactions place additional demands on our management and current labor force. Additionally, these transactions require significant resources from our legal, finance and business teams. In addition, we may divest existing businesses, which would cause a decline in revenue and may make our financial results more volatile. If we fail to integrate and manage acquired businesses successfully or to manage the risks associated with divestitures, joint ventures or other alliances, our business, financial condition and operating results may be materially and adversely affected.

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The market price of our common shares and our earnings per share may decline as a result of any acquisitions or divestitures.

The market price of our common shares may decline as a result of any acquisitions or divestitures made by us if we do not achieve the perceived benefits of such acquisitions or divestitures as rapidly or to the extent anticipated by financial or industry analysts or if the effect on our financial results is not consistent with the expectations of financial or industry analysts. In addition, the failure to achieve expected benefits and unanticipated costs relating to our acquisitions could reduce our future earnings per share.

We may be unable to continue to compete successfully in the highly competitive semiconductor equipment and packaging materials industries.

The semiconductor equipment and packaging materials industries are very competitive. In the semiconductor equipment industry, significant competitive factors include price, speed/throughput, production yield, process control, delivery time, innovation, quality and customer support. In the semiconductor packaging materials industry, competitive factors include price, delivery and quality.

In each of our markets, we face competition and the threat of competition from established competitors and potential new entrants. In addition, established competitors may combine to form larger, better capitalized companies. Some of our competitors have or may have significantly greater financial, engineering, manufacturing and marketing resources. Some of these competitors are Asian and European companies that have had, and may continue to have, an advantage over us in supplying products to local customers who appear to prefer to purchase from local suppliers, without regard to other considerations.

We expect our competitors to improve their current products' performance, and to introduce new products and materials with improved price and performance characteristics. Our competitors may independently develop technology similar to or better than ours. New product and material introductions by existing competitors or by new market entrants could hurt our sales. If a semiconductor manufacturer or subcontract assembler selects a competitor's product or materials for a particular assembly operation, we may not be able to sell products or materials to that manufacturer or assembler for a significant period of time. Manufacturers and assemblers sometimes develop lasting relationships with suppliers and assembly equipment providers in our industry and often go years without requiring replacement. In addition, we may have to lower our prices in response to price cuts by our competitors, which may materially and adversely affect our business, financial condition and operating results. If we cannot compete successfully, we could be forced to reduce prices and could lose customers and experience reduced margins and profitability.

Our success depends in part on our intellectual property, which we may be unable to protect.

Our success depends in part on our proprietary technology. To protect this technology, we rely principally on contractual restrictions (such as nondisclosure and confidentiality provisions) in our agreements with employees, subcontractors, vendors, consultants and customers and on the common law of trade secrets and proprietary “know-how.” We also rely, in some cases, on patent and copyright protection, although this protection may in some cases be insufficient as the duration of our patents often exceeds the commercial life cycles of the technologies disclosed and claimed in the patents due to the rapid development of technology in our industry. We may not be successful in protecting our technology for a number of reasons, including the following:

• employees, subcontractors, vendors, consultants and customers may violate their contractual agreements, and the cost of enforcing those agreements may be prohibitive, or those agreements may be unenforceable or more limited than we anticipate;

• foreign intellectual property laws may not adequately protect our intellectual property rights; and

• our patent and copyright claims may not be sufficiently broad to effectively protect our technology; our patents or copyrights may be challenged, invalidated or circumvented; or we may otherwise be unable to obtain adequate protection for our technology.

In addition, our partners and alliances may have rights to technology developed by us. We may incur significant expense to protect or enforce our intellectual property rights. If we are unable to protect our intellectual property rights, our competitive position may be weakened.

Third parties may claim we are infringing on their intellectual property, which could cause us to incur significant litigation costs or other expenses, or prevent us from selling some of our products.

The semiconductor industry is characterized by rapid technological change, with frequent introductions of new products and technologies. Industry participants often develop products and features similar to those introduced by others, creating a risk that their products and processes may give rise to claims they infringe on the intellectual property of others. We may unknowingly infringe on the intellectual property rights of others and incur significant liability for that infringement. If we are found to have infringed on the intellectual property rights of others, we could be enjoined from continuing to manufacture, market or use the

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affected product, or be required to obtain a license to continue manufacturing or using the affected product. A license could be very expensive to obtain or may not be available at all. Similarly, changing or re-engineering our products or processes to avoid infringing the rights of others may be costly, impractical or time consuming.

Occasionally, third parties assert that we are, or may be, infringing on or misappropriating their intellectual property rights. In these cases, we defend, and will continue to defend, against claims or negotiate licenses where we consider these actions appropriate. Intellectual property cases are uncertain and involve complex legal and factual questions. If we become involved in this type of litigation, it could consume significant resources and divert our attention from our business.

We may be materially and adversely affected by environmental and safety laws and regulations.

We are subject to various federal, state, local and foreign laws and regulations governing, among other things, the generation, storage, use, emission, discharge, transportation and disposal of hazardous material, investigation and remediation of contaminated sites and the health and safety of our employees. Increasingly, public attention has focused on the environmental impact of manufacturing operations and the risk to neighbors of chemical releases from such operations.

Proper waste disposal plays an important role in the operation of our manufacturing plants. In many of our facilities we maintain wastewater treatment systems that remove metals and other contaminants from process wastewater. These facilities operate under permits that must be renewed periodically. A violation of those permits may lead to revocation of the permits, fines, penalties or the incurrence of capital or other costs to comply with the permits, including potential shutdown of operations.

Compliance with existing or future, land use, environmental and health and safety laws and regulations may: (1) result in significant costs to us for additional capital equipment or other process requirements, (2) restrict our ability to expand our operations and/or (3) cause us to curtail our operations. We also could incur significant costs, including cleanup costs, fines or other sanctions and third-party claims for property damage or personal injury, as a result of violations of or liabilities under such laws and regulations. Any costs or liabilities to comply with or imposed under these laws and regulations could materially and adversely affect our business, financial condition and operating results.

We have the ability to issue additional equity securities, which would lead to dilution of our issued and outstanding common shares.

The issuance of additional equity securities or securities convertible into equity securities will result in dilution of our existing shareholders' equity interests in us. Our board of directors has the authority to issue, without vote or action of shareholders, preferred shares in one or more series, and has the ability to fix the rights, preferences, privileges and restrictions of any such series. Any such series of preferred shares could contain dividend rights, conversion rights, voting rights, terms of redemption, redemption prices, liquidation preferences or other rights superior to the rights of holders of our common shares. In addition, we are authorized to issue, without shareholder approval, up to an aggregate of 200 million common shares, of which approximately 70.2 million shares were outstanding as of September 30, 2017. We are also authorized to issue, without shareholder approval, securities convertible into either common shares or preferred shares.

Weaknesses in our internal controls and procedures could result in material misstatements in our financial statements.

Pursuant to the Sarbanes-Oxley Act, management is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal controls over financial reporting are processes designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with U.S. generally accepted accounting principles. A material weakness is a control deficiency, or combination of control deficiencies, that results in a more than remote likelihood that a material misstatement of annual or interim financial statements will not be prevented or detected.

Our internal controls may not prevent all potential errors or fraud. Any control system, no matter how well designed and implemented, can only provide reasonable and not absolute assurance that the objectives of the control system will be achieved. We or our independent registered public accountants may identify material weaknesses in our internal controls which could adversely affect our ability to ensure proper financial reporting and could affect investor confidence in us and the price of our common shares.

We may be subject to disruptions or failures in our information technology systems and network infrastructures that could have a material adverse effect on us.

We maintain and rely extensively on information technology systems and network infrastructures for the effective operation of our business. We also hold large amounts of data in data center facilities around the world, primarily in Singapore and the U.S., which our business depends upon. A disruption, infiltration or failure of our information technology systems or any of our data centers as a result of software or hardware malfunctions, computer viruses, cyber-attacks, employee theft or misuse, power

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disruptions, natural disasters or accidents could cause breaches of data security and loss of critical data, which in turn could materially adversely affect our business. Our security procedures, such as virus protection software and our business continuity planning, such as our disaster recovery policies and back-up systems, may not be adequate or implemented properly to fully address the adverse effect of such events, which could adversely impact our operations. In addition, our business could be adversely affected to the extent we do not make the appropriate level of investment in our technology systems as our technology systems become out-of-date or obsolete and are not able to deliver the type of data integrity and reporting we need to run our business. Furthermore, when we implement new systems and or upgrade existing systems, we could be faced with temporary or prolonged disruptions that could adversely affect our business.

We have experienced, and expect to continue to be subject to, cybersecurity threats and incidents, ranging from employee error or misuse to individual attempts to gain unauthorized access to information systems to sophisticated and targeted measures known as advanced persistent threats, none of which have been material to the Company to date. We devote significant resources to network security and other measures to protect our systems and data from unauthorized access or misuse. However, depending on the nature and scope, cybersecurity incidents could result in business disruption; the misappropriation, corruption or loss of confidential information and critical data (of the Company or that of third parties); reputational damage; litigation with third parties; diminution in the value of our investment in research, development and engineering; data privacy issues; and increased cybersecurity protection and remediation costs.

If the tax holiday arrangements we have negotiated in Singapore change or cease to be in effect or applicable, in part or in whole, for any reason, the amount of corporate income taxes we have to pay could significantly increase.

We have structured our operations to maximize the benefit from tax holidays extended to us in Singapore to encourage investment or employment. We have the Development and Expansion Incentive (“DEI”) from Singapore Economic Development Board, an agency of the Government of Singapore, which provides that certain classes of income we earn in Singapore are subject to reduced rates of Singapore income tax. In order to retain the tax benefit, we must meet certain operating conditions, among other things, maintenance of certain global headquarters functions, specified IP activities and specified manufacturing activities in Singapore. The DEI is presently scheduled to expire in 2020. Renewals and extensions of the DEI are at the discretion of the Singapore government, and we may not be able to extend the tax incentive arrangement after its expiration on similar terms or at all. We may also elect not to renew or extend this tax incentive arrangement. In the absence of DEI, the corporate income tax rate in Singapore that would otherwise apply would be 17%. The tax incentive is also subject to our compliance with various operating and other conditions. If we cannot, or elect not to, comply with the operating conditions included in the tax incentive, we will lose the related tax benefits. In such event, we could be required to refund material tax benefits previously realized by us with respect to that incentive.

Risks Related to the Liteq Acquisition

We face risks associated with integrating Liteqinto the Company.

The successful expansion of our business and operations resulting from the Liteq acquisition will require significant time, effort, attention and dedication of management and may strain our operational and financial resources. It is possible that integrating Liteq and its businesses into the Company could result in changes to or pressure on compliance with standards, controls, procedures and policies. This process could expose us to risks and challenges, including:

• unanticipated issues in coordinating information, communication and other systems;

• unexpected loss of key employees;

• distraction of management attention from our other businesses;

• the need to modify operating and accounting controls and procedures; and

• foreign currency fluctuation that could negatively impact our financial results and cash flows.

In addition, it is possible that our exposure to potential liabilities resulting from Liteq’s business, some of which may be material or unknown, could exceed amounts we can recover through indemnification claims.

These types of challenges and uncertainties could have a material adverse effect on our business, cash flows, results of operations and financial condition.

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We may fail to realize the anticipated benefits of the Liteqacquisition.

The Liteq acquisition is intended to expand our presence in the advanced packaging market. The success of the Liteq acquisition will depend on, among other things, our ability to integrate Liteq and its businesses into the Company. Liteq's businesses are also subject to certain risks that may negatively affect the financial results for our Capital Equipment business segment, including, among others, the following:

• Liteq’s business is largely dependent on the introduction and adoption by customers of our lithography solutions for advanced packaging. There is no assurance that the new products or technology introduction will be successful in demonstrating functionality and performance or will be accepted in the market with customers in commercial applications.

• The goodwill established in connection with our acquisition of Liteq represents the estimated future economic benefits arising from the assets we have acquired that did not qualify to be identified and recognized individually. The goodwill also includes the value of expected future cash flows of Liteq, expected synergies with our other affiliates and other unidentifiable intangible assets. Goodwill is deemed to have an indefinite useful life and is subject to review for impairment annually, or more frequently, whenever circumstances indicate potential impairment. The value of goodwill is supported by revenue, which is driven primarily by transaction volume. Intangible assets other than goodwill primarily consist of developed technology.

• The calculation of the estimated fair value of goodwill and other intangibles requires the use of significant estimates and assumptions that are highly subjective in nature, such as attrition rates, discount rates, future expected cash flows and market conditions. Our estimates are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable. If actual results differ from our assumptions, we may not realize the full value of our intangible assets and goodwill.

For these and other reasons there can be no assurance that the anticipated synergies and benefits from the transaction will be realized fully or at all. If we fail to realize the full value of our intangible assets and goodwill related to the acquisition, we may be required to write down or write off all such intangible assets or goodwill. Such an impairment of our goodwill or intangible assets could have a material adverse effect on our results of operations.

Other Risks

Our ability to recognize tax benefits on future domestic U.S. tax losses and our existing U.S. net operating loss position may be limited.

We have generated net operating loss carry-forwards and other tax attributes for U.S. tax purposes (“Tax Benefits”) that can be used to reduce our future federal income tax obligations. Under the Tax Reform Act of 1986, the potential future utilization of our Tax Benefits for U.S. tax purposes may be limited following an ownership change. An ownership change is generally defined as a greater than 50% point increase in equity ownership by 5% shareholders in any three-year period under Section 382 of the Internal Revenue Code. An ownership change may significantly limit our ability to fully utilize our net operating losses which could materially and adversely affect our financial condition and operating results. Certain foreign jurisdictions may also have rules that are similar to the U.S. on limiting utilization of tax attributes resulting from an ownership change. As of September 30, 2017, we have foreign net operating loss carryforwards of $95.8 million, domestic state net operating loss carryforwards of $165.8 million, federal tax credit carryforwards of $24.3 million, and state tax credit carryforwards of $4.9 million that can reduce future taxable income.

Potential changes to U.S. and foreign tax laws could increase our income tax expense.

We are subject to income taxes in the U.S. and many foreign jurisdictions. Tax authorities in some of the jurisdictions in which we do business, including the U.S., have proposed or announced that they are reviewing tax changes that could potentially increase taxes, and other revenue-raising laws and regulations. It is unclear whether these proposed tax revisions will be enacted, or, if enacted, what the scope of the revisions will be. Changes in U.S. and foreign tax laws, if enacted, could materially and adversely affect our financial condition and operating results.

Anti-takeover provisions in our articles of incorporation and bylaws, and under Pennsylvania law may discourage other companies from attempting to acquire us.

Some provisions of our articles of incorporation and bylaws as well as Pennsylvania law may discourage some transactions where we would otherwise experience a fundamental change. For example, our articles of incorporation and bylaws contain provisions that:

• classify our board of directors into four classes, with one class being elected each year;

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• permit our board to issue “blank check” preferred shares without shareholder approval; and

• prohibit us from engaging in some types of business combinations with a holder of 20% or more of our voting securities without super-majority board or shareholder approval.

Further, under the Pennsylvania Business Corporation Law, because our shareholders approved bylaw provisions that provide for a classified board of directors, shareholders may remove directors only for cause. These provisions and some other provisions of the Pennsylvania Business Corporation Law could delay, defer or prevent us from experiencing a fundamental change and may adversely affect our common shareholders' voting and other rights.

Terrorist attacks, or other acts of violence or war may affect the markets in which we operate and our profitability.

Terrorist attacks may negatively affect our operations. There can be no assurance that there will not be further terrorist attacks against the U.S. or U.S. businesses. Terrorist attacks or armed conflicts may directly impact our physical facilities or those of our suppliers or customers. Our primary facilities include administrative, manufacturing, sales and research and development facilities in Singapore, manufacturing and research and development facilities in the Netherlands, China, and Israel and sales and research and development facilities in the U.S. Additional terrorist attacks may disrupt the global insurance and reinsurance industries with the result that we may not be able to obtain insurance at historical terms and levels for all of our facilities. Furthermore, additional attacks may make travel and the transportation of our supplies and products more difficult and more expensive and ultimately affect the sales of our products in the U.S. and overseas. Additional attacks or any broader conflict, could negatively impact our domestic and international sales, our supply chain, our production capability and our ability to deliver products to our customers. Political and economic instability in some regions of the world could negatively impact our business. The consequences of terrorist attacks or armed conflicts are unpredictable, and we may not be able to foresee events that could have an adverse effect on our business.

Item 1B. UNRESOLVED STAFF COMMENTS

None.

Item 2. PROPERTIES

The following table reflects our major facilities as of September 30, 2017:

Facility (1)	Approximate Size	Function	Business Segment and Products Manufactured	Lease Expiration Date
Singapore	198,000 sq. ft.	Corporate headquarters, manufacturing, technology, sales and service center	Capital Equipment: ball and wedge bonders, advanced packaging and AT Premier	November 2043 (2)
Suzhou, China	155,000 sq. ft.	Manufacturing, technology and shared support services center	APS: capillaries, dicing blades and bonding wedges	Owned
Eindhoven, Netherlands	100,000 sq. ft.	Manufacturing, technology, sales and service center	Capital Equipment: Advanced Packaging and Electronics Assembly	September 2025 (3)
Fort Washington, Pennsylvania	88,000 sq. ft.	Technology, sales and service center	Not applicable	Owned
Santa Ana, California	65,000 sq. ft.	Technology, sales and service center	Not applicable	August 2036 (4)
Yokneam, Israel	21,000 sq. ft.	Manufacturing and technology center	APS: capillary blanks (semi-finish)	January 2018 (5)

(1) Each of the facilities listed in this table is leased other than the facility in Suzhou, China and Fort Washington, Pennsylvania

(2) Includes lease extension periods at the Company's option. Initial lease expires in November 2023.

(3) Includes lease extension periods at the Company's option. Initial lease expires in September 2020.

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(4) Includes lease extension periods at the Company's option. Initial lease expires in September 2023.

(5) At the expiry of the lease, the Israel operations will relocate to a 29,000 sq. ft. facility in Haifa, Israel with an initial lease period of 10 years and a lease extension period of 10 years at the Company's option.

In addition, the Company rents space for sales and service offices and administrative functions in China, Germany, Japan, Malaysia, South Korea, Switzerland, Taiwan, Thailand and the Philippines. The Company believes the facilities are generally in good condition and suitable to the extent of utilization needed.

Item 3. LEGAL PROCEEDINGS

From time to time, we may be a plaintiff or defendant in cases arising out of our business. We cannot be assured of the results of any pending or future litigation, but we do not believe resolution of these matters will materially or adversely affect our business, financial condition or operating results.

Item 4.MINE SAFETY DISCLOSURES

Not applicable.

PART II

Item 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is traded on The Nasdaq Global Market (“Nasdaq”) under the symbol “KLIC.” The following table reflects the ranges of high and low sale prices for our common stock as reported on Nasdaq for the periods indicated:

	Fiscal 2017				Fiscal 2016
	High		Low		High		Low
First Quarter	$	16.88	$	12.64	$	12.39	$	9.13
Second Quarter	$	21.23	$	15.95	$	12.20	$	9.63
Third Quarter	$	23.00	$	18.80	$	12.98	$	10.62
Fourth Quarter	$	22.71	$	18.22	$	13.44	$	11.29

On November 14, 2017, there were approximately 226 holders of record of the shares of outstanding common stock. The payment of dividends on our common stock is within the discretion of our board of directors; however, we have not historically paid any dividends on our common stock. In addition, we do not expect to declare dividends on our common stock in the near future, since we intend to retain earnings to finance our business.

For the purpose of calculating the aggregate market value of shares of our common stock held by non-affiliates, as shown on the cover page of this report, we have assumed all of our outstanding shares were held by non-affiliates except for shares held by our directors and executive officers. However, this does not necessarily mean that all directors and executive officers of the Company are, in fact, affiliates of the Company, or there are no other persons who may be deemed to be affiliates of the Company. Further information concerning the beneficial ownership of our executive officers, directors and principal shareholders will be included in our Proxy Statement for the 2018 Annual Meeting of Shareholders to be filed with the Securities and Exchange Commission on or about January 25, 2018.

Recent Sales of Unregistered Securities and Use of Proceeds

None.

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Purchases of Equity Securities by the Issuer and Affiliated Purchasers

The following table summarizes the repurchases of common stock during the three months ended September 30, 2017 (in thousands, except per share amounts):

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs (1)
July 2, 2017 to July 29, 2017	7	$	18.98	7	$	6,634
July 30, 2017 to September 2, 2017	566	$	19.30	566	$	95,708
September 3, 2017 to September 30, 2017	362	$	19.21	362	$	88,753
For the three months ended September 30, 2017	935			935

(1) On August 15, 2017, the Company announced that it fully executed its $100 million share repurchase program (the "Program"), originally announced on August 27, 2014. In addition, the Company announced that its Board of Directors has approved a new share repurchase program (the "New Program") that authorizes the repurchase of up to $100 million of the Company's common shares, from time to time over the three year period ending August 1, 2020. The Company may purchase shares of its common stock through open market and privately negotiated transactions at prices deemed appropriate by management. The Company has entered into a written trading plan under Rule 10b5-1 of the Exchange Act to facilitate repurchases under the New Program. The New Program is effective immediately, may be suspended or discontinued at any time and will be funded using the Company's available cash, cash equivalents and short-term investments. The timing and amount of repurchase transactions under the New Program depend on market conditions as well as corporate and regulatory considerations.

Item 6. SELECTED CONSOLIDATED FINANCIAL DATA

The following tables reflect selected historical consolidated financial data derived from the consolidated financial statements of Kulicke and Soffa Industries, Inc. and subsidiaries as of and for each of the five fiscal years ended 2017, 2016, 2015, 2014, and 2013.

This data should be read in conjunction with our consolidated financial statements, including notes and other financial information included elsewhere in this report or other reports filed previously by us in respect of the fiscal years identified in the column headings of the tables below.

	Fiscal
(in thousands)	2017			2016		2015			2014		2013
Statement of Operations Data:
Net revenue	809,041			627,192		536,471			568,569		534,938
Income from operations	98,254			52,539		37,251			76,984		65,806
Interest income (expense), net	5,432			2,211		454			149		862
Income before income tax	103,686			54,750		37,705			77,133		66,668
Income tax (benefit) / expense(1)	(8,135		)	7,638		(12,934		)	14,145		7,310
Share of results of equity-method investee, net of tax	(190		)	—		—			—		—
Net income	$	112,011		$	47,112	$	50,639		$	62,988	$	59,358

(1) The following are the most significant factors that affected our provision for income taxes: volatility in our earnings each fiscal year and variation in earnings among various tax jurisdictions in which we operate; changes in assumptions regarding repatriation of earnings; changes in tax legislation; and our provision for various tax exposure items.

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	Fiscal
	2017		2016		2015		2014		2013
Per Share Data:
Net income per share:
Basic	$	1.58	$	0.67	$	0.67	$	0.82	$	0.79
Diluted	$	1.55	$	0.67	$	0.67	$	0.81	$	0.78
Weighted average shares outstanding:
Basic	70,906		70,477		75,414		76,396		75,132
Diluted	72,063		70,841		75,659		77,292		76,190

	Fiscal
(in thousands)	2017		2016		2015		2014		2013
Balance Sheet Data:
Cash, cash equivalents and short-term investments	$	608,410	$	547,907	$	498,614	$	597,086	$	525,040
Working capital	752,934		662,345		633,435		756,340		676,986
Total assets	1,171,107		982,444		904,466		944,448		862,994
Long-term and current portion of financing obligation	16,769		17,318		17,003		19,616		19,396
Shareholders' equity	912,936		806,518		769,249		789,242		716,665

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Item 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

In addition to historical information, this filing contains statements relating to future events or our future results. These statements are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and are subject to the safe harbor provisions created by statute. Such forward-looking statements include, but are not limited to, our future revenue, increasing, continuing or strengthening, or decreasing or weakening, demand for our products, replacement demand, our research and development efforts, our ability to identify and realize new growth opportunities, our ability to control costs and our operational flexibility as a result of (among other factors):

• projected growth rates in the overall semiconductor industry, the semiconductor assembly equipment market, and the market for semiconductor packaging materials; and

• projected demand for ball, wedge bonder, advanced packaging and electronic assembly equipment and for tools, spares and services.

Generally, words such as “may,” “will,” “should,” “could,” “anticipate,” “expect,” “intend,” “estimate,” “plan,” “continue,” “goal” and “believe,” or the negative of or other variations on these and other similar expressions identify forward-looking statements. These forward-looking statements are made only as of the date of this filing. We do not undertake to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise.

Forward-looking statements are based on current expectations and involve risks and uncertainties. Our future results could differ significantly from those expressed or implied by our forward-looking statements. These risks and uncertainties include, without limitation, those described below and under the heading “Risk Factors” in this Annual Report on Form 10-K (the “Annual Report”) and our other reports and registration statements filed from time to time with the Securities and Exchange Commission. This discussion should be read in conjunction with the Consolidated Financial Statements and Notes included in this report, as well as our audited financial statements included in the Annual Report.

We operate in a rapidly changing and competitive environment. New risks emerge from time to time and it is not possible for us to predict all risks that may affect us. Future events and actual results, performance and achievements could differ materially from those set forth in, contemplated by or underlying the forward-looking statements, which speak only as of the date on which they were made. Except as required by law, we assume no obligation to update or revise any forward-looking statement to reflect actual results or changes in, or additions to, the factors affecting such forward-looking statements. Given those risks and uncertainties, investors should not place undue reliance on forward-looking statements as predictions of actual results.

Our Management's Discussion and Analysis ("MD&A") is provided in addition to the accompanying consolidated financial statements and notes to assist readers in understanding our results of operations, financial condition, and cash flows. MD&A is organized as follows:

• Overview:  Introduction of our operations, key events, business environment, technology leadership, products and services

• Critical Accounting Policies

• Recent Accounting Pronouncements

• Results of Operations

• Liquidity and Capital Resources

• Other Obligations and Contingent Payments

Overview

For an overview of our business, see "Part I – Item 1. – Business"

Segment Realignment

During the fourth quarter of fiscal 2017, we reorganized our reporting structure into two reportable segments consisting of: (i) Capital Equipment; and (ii) APS. As a result of this re-alignment, the Company has aggregated twelve operating segments as of September 30, 2017, with six operating segments within the Capital Equipment reportable segment and six operating segments in the APS reportable segment. Subsequently, we have recasted financial results for fiscal years 2017, 2016 and 2015 based on the revised segment structure. The change in the segments was a result of changes to our organizational structure initiated during the fourth quarter of fiscal 2017 to streamline business operations to improve profitability and competitiveness and reflects a change in the manner in which our chief operating decision maker reviews information to assess our performance and make decisions about resource allocation. As part of these actions, we transitioned to a new internal management structure whereby the operating

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management responsible for tools used to assemble semiconductor devices, including integrated circuits (“ICs”), high and low powered discrete devices, light-emitting diodes (“LEDs”) and power modules, services, spares, maintenance, repair and upgrading operating segments was brought under common leadership in the APS segment. The restructuring actions were completed during the fourth quarter of fiscal year 2017. Subsequent to the reorganization, the Capital Equipment segment comprises of the manufacturing and selling of ball bonders, wafer level bonders, wedge bonders, advanced packaging and electronic assembly solutions to semiconductor device manufacturers, IDMs, OSATs, other electronics manufacturers and automotive electronics suppliers.

For further information on our operating segments and the reorganization actions, please refer to Note 15, "Segment Information," to our Consolidated Financial Statements included under "Item 8, Financial Statements and Supplementary Data" of this Form 10-K. Our prior period reportable segment information has been recasted to reflect the current segment structure and conform to the current period presentation.

Critical Accounting Policies

The preparation of consolidated financial statements requires us to make assumptions, estimates and judgments that affect the reported amounts of assets and liabilities, net revenue and expenses during the reporting periods, and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. On an ongoing basis, we evaluate estimates, including but not limited to, those related to accounts receivable, reserves for excess and obsolete inventory, carrying value and lives of fixed assets, goodwill and intangible assets, valuation allowances for deferred tax assets and deferred tax liabilities, repatriation of un-remitted foreign subsidiary earnings, equity-based compensation expense and warranties. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable. As a result, we make judgments regarding the carrying values of our assets and liabilities that are not readily apparent from other sources. Authoritative pronouncements, historical experience and assumptions are used as the basis for making estimates, and on an ongoing basis, we evaluate these estimates. Actual results may differ from these estimates.

We believe the following critical accounting policies, which have been reviewed with the Audit Committee of our Board of Directors, reflect our more significant judgments and estimates used in the preparation of our consolidated financial statements.

Revenue Recognition

In accordance with ASC No. 605, Revenue Recognition, we recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, the collectability is reasonably assured, and customer acceptance, when applicable, has been received or we otherwise have been released from customer acceptance obligations. If terms of the sale provide for a customer acceptance period, revenue is recognized upon the expiration of the acceptance period or customer acceptance, whichever occurs first. Services revenue is generally recognized over the period that the services are provided.

Our business is subject to contingencies related to customer orders, including:

• Right of Return: A large portion of our revenue comes from the sale of machines used in the semiconductor assembly process. Other product sales relate to consumable products, which are sold in high-volume quantities, and are generally maintained at low stock levels at our customer's facility. Customer returns have historically represented a very small percentage of customer sales on an annual basis.

• Warranties: Our equipment is generally shipped with a one-year warranty against manufacturing defects. We establish reserves for estimated warranty expense when revenue for the related equipment is recognized. The reserve for estimated warranty expense is based upon historical experience and management's estimate of future expenses.

• Conditions of Acceptance: Sales of our consumable products generally do not have customer acceptance terms. In certain cases, sales of our equipment have customer acceptance clauses which may require the equipment to perform in accordance with customer specifications or when installed at the customer's facility. In such cases, if the terms of acceptance are satisfied at our facility prior to shipment, the revenue for the equipment will be recognized upon shipment. If the terms of acceptance are satisfied at our customers' facilities, the revenue for the equipment will not be recognized until acceptance, which is typically obtained after installation and testing, is received from the customer.

Shipping and handling costs billed to customers are recognized in net revenue. Shipping and handling costs paid by us are included in cost of sales.

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Allowance for Doubtful Accounts

We maintain allowances for doubtful accounts for estimated losses resulting from our customers' failure to make required payments. If the financial condition of our customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. We are subject to concentrations of customers and sales to a few geographic locations, which could also impact the collectability of certain receivables. If global or regional economic conditions deteriorate or political conditions were to change in some of the countries where we do business, it could have a significant impact on our results of operations, and our ability to realize the full value of our accounts receivable.

Inventories

Inventories are stated at the lower of cost (on a first-in first-out basis) or net realizable value. We generally provide reserves for obsolete inventory and for inventory considered to be in excess of demand. Demand is generally defined as 18 months forecasted future consumption for equipment, 24 months forecasted future consumption for spare parts, and 12 months forecasted future consumption for tools. Forecasted consumption is based upon internal projections, historical sales volumes, customer order activity and a review of consumable inventory levels at customers' facilities. We communicate forecasts of our future consumption to our suppliers and adjust commitments to those suppliers accordingly. If required, we reserve the difference between the carrying value of our inventory and the lower of cost or net realizable value, based upon projections about future consumption, and market conditions. If actual market conditions are less favorable than projections, additional inventory reserves may be required.

Inventory reserve provision for certain subsidiaries is determined based on management's estimate of future consumption for equipment and spare parts. This estimate is based on historical sales volumes, internal projections and market developments and trends.

Accounting for Impairment of Goodwill

The Company operates two reportable segments: Capital Equipment and Aftermarket Products and Services ("APS"). Goodwill was recorded for the acquisitions of Orthodyne Electronics Corporation ("Orthodyne"), Assembléon B.V. ("Assembléon") and Liteq B.V. in fiscal 2009, 2015 and 2017, respectively.

ASC No. 350, Intangibles-Goodwill and Other ("ASC 350") requires goodwill and intangible assets with indefinite lives to be reviewed for impairment annually, or more frequently if circumstances indicate a possible impairment. We assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, after assessing the qualitative factors, a company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying value, then performing the two-step impairment test is unnecessary. However, if a company concludes otherwise, then it is required to perform the first step of the two-step goodwill impairment test. If the carrying value of a reporting unit exceeds its fair value in the first step of the test, then a company is required to perform the second step of the goodwill impairment test to measure the amount of the reporting unit's goodwill impairment loss, if any. 

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04. This eliminates the requirement to perform step 2 of the goodwill impairment test.

In fiscal 2017 and 2016, the Company chose to bypass the qualitative assessment and proceed directly to performing the quantitative evaluation of the fair value of the reporting unit, to compare against the carrying value of the reporting unit.

As part of the annual evaluation, the Company performs an impairment test of its goodwill in the fourth quarter of each fiscal year to coincide with the completion of its annual forecasting and refreshing of its business outlook processes. On an ongoing basis, the Company monitors if a “triggering” event has occurred that may have the effect of reducing the fair value of a reporting unit below its respective carrying value. Adverse changes in expected operating results and/or unfavorable changes in other economic factors used to estimate fair values could result in a non-cash impairment charge in the future.

Impairment assessments inherently involve judgment as to the assumptions made about the expected future cash flows and the impact of market conditions on those assumptions. Future events and changing market conditions may impact the assumptions as to prices, costs, growth rates or other factors that may result in changes in the estimates of future cash flows. Although the Company believes the assumptions that it has used in testing for impairment are reasonable, significant changes in any one of the assumptions could produce a significantly different result. Indicators of potential impairment may lead the Company to perform interim goodwill

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impairment assessments, including significant and unforeseen customer losses, a significant adverse change in legal factors or in the business climate, a significant adverse action or assessment by a regulator, a significant stock price decline or unanticipated competition.

For further information on goodwill and intangible assets, see Note 5 below.

Income Taxes

In accordance with ASC No. 740, Income Taxes, deferred income taxes are determined using the balance sheet method. We record a valuation allowance to reduce our deferred tax assets to the amount we expect is more likely than not to be realized. While we have considered future taxable income and our ongoing tax planning strategies in assessing the need for the valuation allowance, if we were to determine that we would be able to realize our deferred tax assets in the future in excess of our net recorded amount, an adjustment to the deferred tax asset would increase income in the period such determination was made. Likewise, should we determine that we would not be able to realize all or part of our net deferred tax assets in the future, an adjustment to the deferred tax asset would decrease income in the period such determination was made.

In accordance with ASC No. 740 Topic 10, Income Taxes, General (“ASC 740.10”), we account for uncertain tax positions taken or expected to be taken in the Company's income tax return. Under ASC 740.10, we utilize a two-step approach for evaluating uncertain tax positions. Step one, or recognition, requires us to determine if the weight of available evidence indicates a tax position is more likely than not to be sustained upon examination solely based on its technical merit. Step two, or measurement, is based on the largest amount of benefit, which is more likely than not to be realized on settlement with the taxing authority, including resolution of related appeals or litigation process, if any.

The Financial Accounting Standards Board ("FASB") has issued Accounting Standard Update ("ASU") 2015-17, Income Taxes (Topic 740), regarding the presentation of deferred income taxes. Under the new standard, both deferred tax liabilities and assets are required to be classified as noncurrent in a classified balance sheet. During the first quarter of fiscal 2016, we elected to prospectively adopt ASU 2015-17, thus reclassifying current deferred taxes to noncurrent on the accompanying Consolidated Balance Sheet.

Equity-Based Compensation

We account for equity-based compensation under the provisions of ASC No. 718, Compensation-Stock Compensation (“ASC 718”). ASC 718 requires the recognition of the fair value of equity-based compensation in net income. Compensation expense associated with market-based restricted stock is determined using a Monte-Carlo valuation model, and compensation expense associated with time-based and performance-based restricted stock is determined based on the number of shares granted and the fair value on the date of grant. The fair value of our stock option awards are estimated using a Black-Scholes option valuation model.

The calculation of equity-based compensation costs requires us to estimate the number of awards that will be forfeited during the vesting period. We have estimated forfeitures at the time of grant based upon historical experience, and review the forfeiture rates periodically and make adjustments as necessary. In addition, the fair value of equity-based awards is amortized over the vesting period of the award and we have elected to use the straight-line method for awards granted after the adoption of ASC 718. In general, equity-based awards vest annually over a three year period. Our performance-based restricted stock entitles the employee to receive common shares of the Company on the three-year anniversary of the grant date (if employed by the Company) if return on invested capital and revenue growth targets set by the Management Development and Compensation Committee of the Board of Directors on the date of grant are met. If return on invested capital and revenue growth targets are not met, performance-based restricted stock does not vest. Estimated attainment percentages and the corresponding equity-based compensation expense reported may vary from period to period.

RECENT ACCOUNTING PRONOUNCEMENTS

See Note 1 to our consolidated financial statements in Item 8 for a description of certain recent accounting pronouncements including the expected dates of adoption and effects on our consolidated results of operations and financial condition.

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RESULTS OF OPERATIONS

Results of Operations for fiscal 2017 and 2016

The following table reflects our income from operations for fiscal 2017 and 2016:

	Fiscal
(dollar amounts in thousands)	2017		2016		$ Change			% Change
Net revenue	$	809,041	$	627,192	$	181,849		29.0	%
Cost of sales	433,995		340,463		93,532			27.5	%
Gross profit	375,046		286,729		88,317			30.8	%
Selling, general and administrative	141,382		141,816		(434		)	(0.3	)%
Research and development	100,203		92,374		7,829			8.5	%
Impairment charges	35,207		—		35,207			N/A
Operating expenses	276,792		234,190		42,602			18.2	%
Income from operations	$	98,254	$	52,539	$	45,715		87.0	%

Bookings and Backlog

Our backlog consists of customer orders scheduled for shipment within the next twelve months. A booking is recorded when a customer order is reviewed and it is determined that all specifications can be met, production (or service) can be scheduled, a delivery date can be set, and the customer meets our credit requirements. We use bookings to evaluate the results of our operations, generate future operating plans and assess the performance of our company. While we believe that this measure is useful in evaluating our business, this information should be considered as supplemental in nature and is not meant as a substitute for revenue recognized in accordance with GAAP. In addition, other companies, including companies in our industry, may calculate bookings differently or not at all, which reduces its usefulness as a comparative measure. Reconciliation of bookings to net revenue is not practicable. A majority of our orders are subject to cancellation or deferral by our customers with limited or no penalties. Also, customer demand for our products can vary dramatically without prior notice. Because of the volatility of customer demand, possibility of customer changes in delivery schedules or cancellations and potential delays in product shipments, our backlog as of any particular date may not be indicative of net revenue for any succeeding period.

The following tables reflect our bookings and backlog for fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017		2016
Bookings	$	912,549	$	661,931
	As of
(in thousands)	September 30, 2017		October 1, 2016
Backlog	$	190,702	$	87,200

Our net revenues for fiscal 2017 increased as compared to our net revenues for fiscal 2016 due to strong customer demand. The semiconductor industry is volatile and our operating results have fluctuated significantly in the past. Customer demand for our products could weaken and lead to a decline in our net revenues.

Net Revenue

Approximately 92.9% and 92.4% of our net revenue for fiscal 2017 and 2016, respectively, was for shipments to customer locations outside of the U.S., primarily in the Asia/Pacific region. In the Asia/Pacific region, our customer base is also becoming more geographically concentrated as a result of economic and industry conditions. Approximately 40.0% and 33.7% of our net revenue for fiscal 2017 and 2016, respectively, was for shipments to customers located inChina.

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The following table reflects net revenue by business segment for fiscal 2017 and 2016:

	Fiscal
(dollar amounts in thousands)	2017		2016		$ Change		% Change
Capital Equipment	$	651,934	$	488,925	$	163,009	33.3	%
APS	157,107		138,267		18,840		13.6	%
Total net revenue	$	809,041	$	627,192	$	181,849	29.0	%

Capital Equipment

The following table reflects the components of Capital Equipment net revenue change between fiscal 2017 and 2016: 

	Fiscal 2017 vs. 2016
(in thousands)	Price			Volume		$ Change
Capital Equipment	$	(11,337	)	$	174,346	$	163,009

For fiscal 2017, the higher Capital Equipment net revenue as compared to fiscal 2016 was primarily due to higher volume. The higher sales volume was primarily due to growing market demand in consumer, enterprise, automotive and industrial applications partially offset by lower demand for our Hybrid products in the SiP market. The higher sales volume was partially offset by unfavorable price variance due to price reduction.

APS

The following table reflects the components of APS net revenue change between fiscal 2017 and 2016: 

	Fiscal 2017 vs. 2016
(in thousands)	Price			Volume		$ Change
APS	$	(4,385	)	$	23,225	$	18,840

For fiscal 2017, the higher APS net revenue as compared to fiscal 2016 was primarily due to higher sales in tools. This was partially offset by price reduction.

Gross Profit

The following table reflects gross profit by business segment for fiscal 2017 and 2016: 

	Fiscal
(dollar amounts in thousands)	2017		2016		$ Change		% Change
Capital Equipment	$	284,118	$	203,991	$	80,127	39.3	%
APS	90,928		82,738		8,190		9.9	%
Total gross profit	$	375,046	$	286,729	$	88,317	30.8	%

The following table reflects gross profit as a percentage of net revenue by business segment for fiscal 2017 and 2016: 

	Fiscal				Basis Point
	2017		2016		Change
Capital Equipment	43.6	%	41.7	%	190
APS	57.9	%	59.8	%	(190	)
Total gross margin	46.4	%	45.7	%	70

Capital Equipment

The following table reflects the components of Capital Equipment gross profit change between fiscal 2017 and 2016: 

	Fiscal 2017 vs. 2016
(in thousands)	Price			Cost		Volume		$ Change
Capital Equipment	$	(11,337	)	$	7,586	$	83,878	$	80,127

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For fiscal 2017, the higher Capital Equipment gross profit as compared to fiscal 2016 was primarily due to higher volume and lower cost. The higher sales volume was primarily due to growing market demand in consumer, enterprise, automotive and industrial applications partially offset by lower demand for our Hybrid products in the SiP market. The lower cost was due to better absorption from higher manufacturing volume. The higher sales volume and lower cost were partially offset by unfavorable price variance due to price reduction.

APS

The following table reflects the components of APS gross profit change between fiscal 2017 and 2016: 

	Fiscal 2017 vs. 2016
(in thousands)	Price			Cost		Volume		$ Change
APS	$	(4,385	)	$	7	$	12,568	$	8,190

For fiscal 2017, the higher APS gross profit as compared to fiscal 2016 was primarily due to higher sales in tools. This was partially offset by price reduction.

Operating Expenses

The following table reflects operating expenses as a percentage of net revenue for fiscal 2017 and 2016:

	Fiscal				Basis point
	2017		2016		change
Selling, general & administrative	17.5	%	22.6	%	(510	)
Research & development	12.4	%	14.7	%	(230	)
Impairment charges	4.4	%	—	%	440
Total	34.3	%	37.3	%	(300	)

Selling, General and Administrative (“SG&A”)

For fiscal 2017, lower SG&A as compared to fiscal 2016 was primarily due to net decrease of $5.2 million of expenses relating to the restructuring programs and $1.4 million relating to other severance payments. These were partially offset by $3.4 million increase in incentive compensation due to better current fiscal year performance and $2.8 million increase in executive staff costs.

Research and Development (“R&D”)

For fiscal 2017, higher R&D expenses as compared to fiscal 2016 was primarily due to higher staff costs. This was partially offset by lower prototype material costs for advanced packaging products.

Impairment Charges

In fiscal 2017, the Company recognized a non-cash impairment charge related to goodwill in the EA/APMR (former Assembléon) reporting unit. See Note 5 “Goodwill and Intangible Assets” of the accompanying consolidated financial statements for further information.

Income from Operations

For fiscal 2017, total income from operations was higher by $45.7 million as compared to fiscal 2016. This was primarily due to higher revenue for Capital Equipment sales and partially offset by higher operating expenses as explained above.

Interest Income and Expense

The following table reflects interest income and interest expense for fiscal 2017 and 2016: 

	Fiscal
(dollar amounts in thousands)	2017			2016			$ Change		% Change
Interest income	$	6,491		$	3,318		$	3,173	95.6	%
Interest expense	$	(1,059	)	$	(1,107	)	$	48	(4.3	)%

For fiscal 2017, interest income was higher as compared to fiscal 2016. This was primarily due to higher returns and a larger cash, cash equivalent and short-term investment balances.

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Interest expense for fiscal 2017 and 2016 was attributable to the interest on financing obligation relating to the building, which was incurred subsequent to the completion of the building in December 2013 (Refer to Note 10 of our Consolidated Financial Statements included in Item 8 of this report).

Provision for Income Taxes

The following table reflects the provision for income taxes and the effective tax rate for fiscal 2017 and 2016: 

	Fiscal
(in thousands)	2017		2016
Income tax (benefit) / expense	(8,135	)	7,638
Effective tax rate	(7.8	)%	14.0	%

During fiscal 2017, the Company elected to adopt the foreign tax credit for its U.S. federal tax return filings. As a result of this election, the Company has amended its U.S. tax returns from 2006 through 2015, filed its 2016 return on the same basis, and accrued the benefit for 2017. Due to this tax position, the Company recorded foreign tax credits of approximately $26.1 million which resulted in a decrease of our effective tax rate from fiscal 2016.

For fiscal 2017, the effective tax rate differed from the federal statutory tax rate primarily due to tax benefits from foreign tax credits, profits generated in foreign operations subject to a lower statutory tax rate than the U.S. federal rate, domestic research tax credit, and the impact of tax holidays, partially offset by an increase for deferred taxes on unremitted earnings, deemed dividends, foreign withholding taxes, tax liabilities from foreign operations, and non-deductible goodwill impairment.

For fiscal 2016, the effective tax rate differed from the federal statutory tax rate primarily due to tax benefits from profits in foreign operations subject to a lower statutory tax rate than the federal rate, tax benefits from the change in permanent reinvestment assertion from the restructuring implementation, tax benefits from domestic research expenditures, and the impact of tax holidays, partially offset by a tax liability arising from a settlement with a foreign tax authority, an increase for deferred taxes on unremitted earnings, foreign withholding taxes, and an increase in valuation allowance against certain foreign deferred tax assets.

Our future effective tax rate would be affected if earnings were lower than anticipated in countries where we are subjected to lower statutory rates and higher than anticipated in countries where we are subjected to higher statutory rates, by changes in the valuation of our deferred tax assets and liabilities, or by changes in tax laws, regulations, accounting principles, or interpretations thereof. In addition, changes in assertion for foreign earnings permanently or non-permanently reinvested as a result of changes in facts and circumstances could significantly impact the effective tax rate.

It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain unrecognized tax positions will increase or decrease during the next 12 months due to the expected lapse of statutes of limitation and/or settlements of tax examinations. We cannot practicably estimate the financial outcomes of these examinations.

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Results of Operations for fiscal 2016 and 2015

The following table reflects our income from operations for fiscal 2016 and 2015:

	Fiscal
(dollar amounts in thousands)	2016		2015		$ Change		% Change
Net revenue	$	627,192	$	536,471	$	90,721	16.9	%
Cost of sales	340,463		277,379		63,084		22.7	%
Gross profit	286,729		259,092		27,637		10.7	%
Selling, general and administrative	141,816		131,808		10,008		7.6	%
Research and development	92,374		90,033		2,341		2.6	%
Operating expenses	234,190		221,841		12,349		5.6	%
Income from operations	$	52,539	$	37,251	$	15,288	41.0	%

Bookings and Backlog

The following tables reflect our bookings and backlog for fiscal 2016 and 2015:

	Fiscal
(in thousands)	2016		2015
Bookings	$	661,931	$	491,427
	As of
(in thousands)	October 1, 2016		October 3, 2015
Backlog	$	87,200	$	52,500

Our net revenues for fiscal 2016 increased as compared to our net revenues for fiscal 2015 due to strong customer demand and additional revenue resulting from the Assembléon acquisition. The semiconductor industry is volatile and our operating results have fluctuated significantly in the past. Customer demand for our products could weaken and lead to a decline in our net revenues.

Net Revenue

Approximately 92.4% and 91.2% of our net revenue for fiscal 2016 and 2015, respectively, was for shipments to customer locations outside of the U.S., primarily in the Asia/Pacific region. In the Asia/Pacific region, our customer base is also becoming more geographically concentrated as a result of economic and industry conditions. Approximately 33.7% and 31.6% of our net revenue for fiscal 2016 and 2015was for shipments to customers located inChina.

The following table reflects net revenue by business segment for fiscal 2016 and 2015:

	Fiscal
(dollar amounts in thousands)	2016		2015		$ Change		% Change
Capital Equipment	$	488,925	411,099		$	77,826	18.9	%
APS	138,267		125,372		12,895		10.3	%
Total net revenue	$	627,192	$	536,471	$	90,721	16.9	%

Capital Equipment

The following table reflects the components of Capital Equipment net revenue change between fiscal 2016 and 2015: 

	Fiscal 2016 vs. 2015
(in thousands)	Price			Volume		$ Change
Capital Equipment	$	(28,567	)	$	106,393	$	77,826

For fiscal 2016, the higher Capital Equipment net revenue as compared to fiscal 2015 was primarily due to the higher volume driven by the strong demand from our customers and inclusion of the additional revenue resulting from the Assembléon acquisition.

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This was partially offset by the unfavorable price variance in our ball bonders and Advanced Packaging products. The unfavorable price variance was due to the unfavorable customer mix.

APS

The following table reflects the components of APS net revenue change between fiscal 2016 and 2015: 

	Fiscal 2016 vs. 2015
(in thousands)	Price			Volume		$ Change
APS	$	(2,970	)	$	15,865	$	12,895

For fiscal 2016, the higher APS net revenue as compared to fiscal 2015 was primarily due to the higher volume. The higher volume was primarily due to higher demand in wire bonding tools and inclusion of the additional revenue resulting from the Assembléon acquisition. This was partially offset by a price reduction.

Gross Profit

The following table reflects gross profit by business segment for fiscal 2016 and 2015: 

	Fiscal
(dollar amounts in thousands)	2016		2015		$ Change		% Change
Capital Equipment	$	203,991	$	183,295	$	20,696	11.3	%
APS	82,738		75,797		6,941		9.2	%
Total gross profit	$	286,729	$	259,092	$	27,637	10.7	%

The following table reflects gross profit as a percentage of net revenue by business segment for fiscal 2016 and 2015: 

	Fiscal				Basis Point
	2016		2015		Change
Capital Equipment	41.7	%	44.6	%	(290	)
APS	59.8	%	60.5	%	(70	)
Total gross margin	45.7	%	48.3	%	(260	)

Capital Equipment

The following table reflects the components of Equipment gross profit change between fiscal 2016 and 2015: 

	Fiscal 2016 vs. 2015
(in thousands)	Price			Cost		Volume		$ Change
Capital Equipment	$	(28,567	)	$	3,273	$	45,990	$	20,696

For fiscal 2016, the higher Capital Equipment gross profit as compared to fiscal 2015 was primarily due to the higher volume described above and lower cost. The higher volume was driven by the strong demand from our customers and inclusion of the additional revenue resulting from the Assembléon acquisition. The lower cost was primarily due to product mix. Higher volume and lower cost were partially offset by the unfavorable price variance in our ball bonders and Advanced Packaging products. The unfavorable price variance was due to the unfavorable customer mix.

APS

The following table reflects the components of APS gross profit change between fiscal 2016 and 2015: 

	Fiscal 2016 vs. 2015
(in thousands)	Price			Cost			Volume		$ Change
APS	$	(2,970	)	$	(151	)	$	10,062	$	6,941

For fiscal 2016, the higher APS gross profit as compared to fiscal 2015 was primarily due to the higher volume. The higher volume was primarily due to higher demand in wire bonding tools and wedge bonding tools and inclusion of the additional revenue resulting from the Assembléon acquisition. This was partially offset by a price reduction.

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Operating Expenses

The following table reflects operating expenses as a percentage of net revenue for fiscal 2016 and 2015:

	Fiscal				Basis point
	2016		2015		change
Selling, general & administrative	22.6	%	24.6	%	(200	)
Research & development	14.7	%	16.8	%	(210	)
Total	37.3	%	41.4	%	(410	)

Selling, General and Administrative (“SG&A”)

For fiscal 2016, higher SG&A as compared to fiscal 2015 was primarily due to $7.9 million of expenses relating to the restructuring program, $7.6 million increase due to inclusion of SG&A expenses resulting from the Assembléon acquisition, $3.2 million increase in incentive compensation due to better performance and a $2.6 million unfavorable net foreign exchange variance. These were partially offset by lower staff costs of $7.0 million due to streamlining of our international operations and functions, and lower amortization expenses of $4.7 million relating to the wedge bonder developed technology which were fully amortized in fiscal year 2015.

Research and Development (“R&D”)

For fiscal 2016, higher R&D expenses as compared to fiscal 2015 were primarily due to additional investment in the development of advanced packaging products. This was partially offset by lower staff costs.

Income from Operations

For fiscal 2016, total income from operations was higher by $15.3 million as compared to fiscal 2015. This was primarily due to higher revenue for equipment sales and partially offset by higher operating expenses as explained above.

Interest Income and Expense

The following table reflects interest income and interest expense for fiscal 2016 and 2015: 

	Fiscal
(dollar amounts in thousands)	2016		2015		$ Change		% Change
Interest income	3,318		1,637		$	1,681	102.7	%
Interest expense	(1,107	)	(1,183	)	$	76	(6.4	)%

For fiscal 2016, higher interest income was derived from a higher cash, cash equivalent and short-term investment balances.

Interest expense for fiscal 2016 and 2015 was attributable to the interest on financing obligation relating to the new building, which was incurred subsequent to the completion of the new building in December 2013 (Refer to Note 10 of our Consolidated Financial Statements included in Item 8 of this report).

Provision for Income Taxes

The following table reflects the provision for income taxes and the effective tax rate for fiscal 2016 and 2015: 

	Fiscal
(in thousands)	2016		2015
Income tax expense / (benefit)	7,638		(12,934	)
Effective tax rate	14.0	%	(34.3	)%

For fiscal 2016, the effective income tax rate increased from fiscal 2015 by 48.3% due primarily to a lower tax benefit of $9.7 million recorded in 2016 as compared to $19.7 million recorded in 2015 related to the reduction in deferred tax liabilities as a result of the change in permanent reinvestment assertion, a one-time tax expense of $4.9 million recorded in 2016 arising from a settlement reached with a foreign tax authority, and a restructuring related tax expense of $4.2 million.

For fiscal 2015, the effective income tax rate differed from the federal statutory rate due primarily to tax benefits from the reduction in deferred tax liabilities on certain unremitted foreign earnings as a result of the change in permanent reinvestment assertion due to a business structure reorganization, tax benefits from research and development expenditures, profits from foreign operations

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subject to a lower statutory tax rate than the federal rate, and the impact of tax holidays, offset by an increase in valuation allowance against certain foreign deferred tax assets, foreign earnings not permanently reinvested, and foreign withholding taxes.

Our future effective tax rate would be affected if earnings were lower than anticipated in countries where we are subjected to lower statutory rates and higher than anticipated in countries where we are subjected to higher statutory rates, by changes in the valuation of our deferred tax assets and liabilities, or by changes in tax laws, regulations, accounting principles, or interpretations thereof. In addition, changes in assertion for foreign earnings permanently or non-permanently reinvested as a result of changes in facts and circumstances could significantly impact the effective tax rate. In fiscal 2016, the Company restructured its entities resulting in a change in its permanent reinvestment assertion outside the United States. During the year ended October 1, 2016, approximately $9.7 million in deferred tax liability was reversed and recorded as a tax benefit due to the change in the assertion. As part of the plan, the Company also recorded a restructuring related tax expense of $4.2 million for the transfers and exchanges of certain foreign subsidiaries. We regularly assess the effects resulting from these factors to determine the adequacy of our provision for income taxes.

It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain unrecognized tax positions will increase or decrease during the next 12 months due to the expected lapse of statutes of limitation and/or settlements of tax examinations. We cannot practicably estimate the financial outcomes of these examinations.

LIQUIDITY AND CAPITAL RESOURCES

The following table reflects total cash and investments as of September 30, 2017 and October 1, 2016:

	As of
(dollar amounts in thousands)	September 30, 2017			October 1, 2016			Change
Cash and cash equivalents	$	392,410		$	423,907		$	(31,497	)
Restricted cash	530			—			530
Short-term investments	216,000			124,000			92,000
Total cash, cash equivalents, restricted cash and short-term investments	$	608,940		$	547,907		$	61,033
Percentage of total assets	52.0		%	55.8		%

The following table reflects summary Consolidated Statement of Cash Flow information for fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017			2016
Net cash provided by operating activities	$	136,310		$	68,407
Net cash used in investing activities	(145,199		)	(129,165		)
Net cash used in financing activities	(22,684		)	(14,486		)
Effect of exchange rate changes on cash and cash equivalents	76			537
Changes in cash and cash equivalents	$	(31,497	)	$	(74,707	)
Cash and cash equivalents, beginning of period	423,907			498,614
Cash and cash equivalents, end of period	$	392,410		$	423,907

Fiscal 2017

Net cash provided by operating activities was primarily the result of net income of $112.0 million, non-cash adjustments of $61.0 million and working capital changes of $(36.7) million.The change in working capital was primarily driven by an increase in accounts and notes receivable of $67.9 million and an increase in net inventories of $47.4 million. This was partially offset by an increase in accounts payable and accrued expenses and other current liabilities of $78.3 million.

The increase in accounts receivable was due to higher sales in fiscal 2017 as compared to fiscal 2016. The increase in net inventories was primarily due to higher manufacturing activity in the fourth quarter of fiscal 2017 as compared to fourth quarter of fiscal 2016. The increase in accounts payable and accrued expenses and other current liabilities was primarily due to an increase in manufacturing activity, higher accrued incentive compensation due to better performance, and higher customer obligations.

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Net cash used in investing activities was primarily due to net cash outflow for the Liteq acquisition of $27.1 million, purchases of short-term investments of $305.0 million and capital expenditures of $25.6 million, offset by maturity of short-term investments of $213.0 million.

Net cash used in financing relates to the repurchase of common stock of $18.2 million, reversal of excess tax benefits of $4.4 million and repayment of loans of $0.6 million. This was offset by proceeds from the exercise of stock options of $0.5 million.

Fiscal 2016

Net cash provided by operating activities was primarily the result of net income of $47.1 million, non-cash adjustments of $14.1 million and working capital changes of $7.2 million.The change in working capital was primarily driven by increase in accounts payable and accrued expenses and other current liabilities of $34.1 million and income tax payable of $10.5 million. This was partially offset by an increase in accounts and notes receivable of $22.1 million, an increase in net inventories of $16.3 million and others of $1.1 million.

The increase in accounts payable and accrued expenses and other current liabilities and the increase in net inventories was primarily due to higher manufacturing activity in the fourth quarter of fiscal 2016 as compared to fourth quarter of fiscal 2015 in anticipation of higher sales in the first quarter of fiscal 2017. The higher income taxes payable was mainly due to additional tax liability arising from a settlement reached with a foreign tax authority. The increase in accounts receivables was due to higher sales in the fourth quarter of fiscal 2016 as compared to the fourth quarter of fiscal 2015. The lower sales in fourth quarter of fiscal 2015 was mainly attributable to lower equipment utilization rate due to the economic conditions, and therefore lower demand from our customers.

Net cash used in investing activities was primarily due to capital expenditures of $6.2 million offset by proceeds from sales of property, plant and equipment of $1.1 million.

Net cash used in financing relates to the repurchase of common stock of $14.6 million and repayment of loans of $0.5 million. This was offset by proceeds from the exercise of stock options of $0.4 million.

Fiscal 2018 Liquidity and Capital Resource Outlook

We expect our fiscal 2018 capital expenditures to be between $26.0 million and $28.0 million.Expenditures are anticipated to be primarily used for R&D projects, enhancements to our manufacturing operations in Asia, improvements to our information technology infrastructure and leasehold improvements for our facilities.

We believe that our existing cash and investments and anticipated cash flows from operations will be sufficient to meet our liquidity and capital requirements for at least the next twelve months. Our liquidity is affected by many factors, some based on normal operations of our business and others related to global economic conditions and industry uncertainties, which we cannot predict. We also cannot predict economic conditions and industry downturns or the timing, strength or duration of recoveries. We intend to continue to use our cash for working capital needs and for general corporate purposes.

We may seek, as we believe appropriate, additional debt or equity financing which would provide capital for corporate purposes, working capital funding, additional liquidity needs or to fund future growth opportunities, including possible acquisitions and investments. The timing and amount of potential capital requirements cannot be determined at this time and will depend on a number of factors, including our actual and projected demand for our products, semiconductor and semiconductor capital equipment industry conditions, competitive factors, and the condition of financial markets.

As of September 30, 2017 and October 1, 2016, approximately $565.0 million and $479.7 million of cash, cash equivalents, restricted cash and short-term investments were held by the Company's foreign subsidiaries, respectively. The cash amounts not available for use in the U.S. without incurring additional U.S. income tax as of September 30, 2017 and October 1, 2016, were approximately $505.5 millionand $428.4 million, respectively.

The Company’s international operations and capital requirements are funded primarily by cash generated by foreign operating activities and cash held by foreign subsidiaries. Most of the Company's operations and liquidity needs are outside the U.S. The Company’s U.S. operations and capital requirements are funded primarily by cash generated from U.S. operating activities. In addition, the Company has entered into an Uncommitted Revolving Credit Agreement with United Overseas Bank Limited, New York Agency ("UOB"), providing for a $25 million revolving credit facility (the "2016 Credit Facility"). The 2016 Credit Facility is an unsecured revolving credit facility of $25 million with an initial maturity date of March 20, 2017, which has been extended on the same terms until March 20, 2018. The proceeds of the 2016 Credit Facility may be used for the Company's general corporate purposes and provide additional liquidity for any U.S. needs. We believe our U.S. sources of cash and liquidity are sufficient to meet our business needs in the U.S. for the foreseeable future including funding of U.S. operations, capital expenditures and the share repurchase program as approved by the Board of Directors. We currently do not expect that we will repatriate the funds we

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have designated as indefinitely reinvested outside the U.S., but may do so in the future. Should the Company’s U.S. cash needs exceed its funds generated by U.S. operations due to changing business conditions or transactions outside the ordinary course, such as acquisitions of large capital assets, businesses or any other capital appropriation in the U.S., the Company may require additional financing in the U.S. In this event, the Company could borrow under the 2016 Credit Facility, seek other U.S. borrowing alternatives, repatriate funds held by foreign subsidiaries that have already been subject to U.S. taxation without incurring additional income tax expense (i.e. earnings previously subject to U.S. income tax or U.S. deferred taxes already accrued on those respective earnings), or a combination thereof.

On August 15, 2017, the Company announced that it fully executed its $100 million share repurchase program (the "Program"), originally announced on August 27, 2014. In addition, the Company announced that its Board of Directors approved a new share repurchase program (the "New Program") that authorizes the repurchase of up to $100 million of the Company's common shares, from time to time over the three year period ending August 1, 2020. The Company may purchase shares of its common stock through open market and privately negotiated transactions at prices deemed appropriate by management. The Company has entered into a written trading plan under Rule 10b5-1 of the Exchange Act to facilitate repurchases under the New Program. The New Program is effective immediately, may be suspended or discontinued at any time and will be funded using the Company's available cash, cash equivalents and short-term investments. The timing and amount of repurchase transactions under the New Program depend on market conditions as well as corporate and regulatory considerations. During the year ended September 30, 2017, the Company repurchased a total of 0.9 million shares of common stock at a cost of $18.2 million. As of September 30, 2017, our remaining share repurchase authorization under the New Program was approximately $88.8 million.

Other Obligations and Contingent Payments

In accordance with U.S. generally accepted accounting principles, certain obligations and commitments are not required to be included in the Consolidated Balance Sheets and Statements of Operations. These obligations and commitments, while entered into in the normal course of business, may have a material impact on our liquidity. Certain of the following commitments as of September 30, 2017 are appropriately not included in the Consolidated Balance Sheets and Statements of Operations included in this Form 10-K; however, they have been disclosed in the table below for additional information.

The Company’s other non-current liabilities in the Consolidated Balance Sheets consist primarily of deferred tax liabilities, gross long-term tax payable and retirement obligations. As of September 30, 2017, the Company had deferred tax liabilities of $26.8 million and long-term tax payable of $6.4 million. At this time, the Company is unable to make a reasonably reliable estimate of the timing of payments due to uncertainties in the timing of tax audit outcomes; therefore, such amounts are not included in the above contractual obligation table. In addition, the Company has retirement obligations and other severances of $6.4 million which are payable on employee departure.

The following table presents certain payments due by the Company under contractual obligations with minimum firm commitments as of September 30, 2017:

			Payments due in
(in thousands)	Total		Less than 1 year		1 - 3 years		3 - 5 years		More than 5 years
Inventory purchase obligations (1)	$	106,084	106,084		$	—	$	—	$	—
Operating lease obligations (2)	19,958		3,781		5,435		3,585		7,157
Asset retirement obligations (reflected on our Balance Sheets)(3)	1,423		436		39		—		948
Total Obligations and Contingent Payments not reflected on the Consolidated Financial Statements	$	127,465	$	110,301	$	5,474	$	3,585	$	8,105

(1) We order inventory components in the normal course of our business. A portion of these orders are non-cancellable and a portion may have varying penalties and charges in the event of cancellation.

(2) Represents minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by us) primarily for various facility and equipment leases, which expire periodically through 2023 (not including lease extension options, if applicable).

The annual rent and service charge for our corporate headquarters range from $4 million to $5 million Singapore dollars and is not included in the table above.

In accordance with ASC No. 840, Leases ("ASC 840"), the Company was considered to be the owner of its headquarters during the construction phase due to its involvement in the asset construction. As a result of the Company's continued

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involvement during the lease term, the Company did not fulfill the criteria to apply sale-leaseback accounting under ASC 840. Therefore, at completion, the building remained on the Consolidated Balance Sheet, and the corresponding financing obligation was reclassified to long-term liability. As of September 30, 2017, we recorded a financing obligation of $16.8 million. The financing obligation is not reflected in the table above.

(3) Asset retirement obligations are associated with commitments to return the property to its original condition upon lease termination at various sites.

Off-Balance Sheet Arrangements

Credit facilities and Bank Guarantees

On November 22, 2013, the Company obtained a $5.0 million credit facility with Citibank in connection with the issuance of a bank guarantee for operational purposes. As of September 30, 2017, the outstanding amount was $3.2 million. In addition, the Company has other bank guarantees for operational purposes which are secured with corresponding deposits placed with the issuer banks. These amounts are shown as restricted cash in the Consolidated Balance Sheets.

On March 21, 2016, the Company entered into an Uncommitted Revolving Credit Agreement with United Overseas Bank Limited, New York Agency ("UOB"), providing for a $25 million revolving credit facility (the "2016 Credit Facility"). The 2016 Credit Facility is an unsecured revolving credit facility of $25 million with an initial term of one year, and has been extended by another year until March 20, 2018. All other material terms and conditions of the 2016 Credit Facility remain in force and effect. The proceeds of the 2016 Credit Facility may be used for the Company's general corporate purposes. As of September 30, 2017, there were no outstanding amounts under the 2016 Credit Facility and we were in compliance with the covenants described in the 2016 Credit Facility.

As of September 30, 2017, we did not have any other off-balance sheet arrangements, such as contingent interests or obligations associated with variable interest entities.

Item 7A. - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

Our available-for-sale securities, if applicable, may consist of short-term investments in highly rated debt instruments of the U.S. Government and its agencies, financial institutions, and corporations. We continually monitor our exposure to changes in interest rates and credit ratings of issuers with respect to any available-for-sale securities and target an average life to maturity of less than 18 months. Accordingly, we believe that the effects to us of changes in interest rates and credit ratings of issuers are limited and would not have a material impact on our financial condition or results of operations.

Foreign Currency Risk

Our international operations are exposed to changes in foreign currency exchange rates due to transactions denominated in currencies other than the location's functional currency. Our international operations are also exposed to foreign currency fluctuations that impact the remeasurement of net monetary assets of those operations whose functional currency, the U.S. dollar, differs from their respective local currencies, most notably in Israel, Singapore and Switzerland. In addition to net monetary remeasurement, we have exposures related to the translation of subsidiary financial statements from their functional currency, the local currency, into its reporting currency, the U.S. dollar, most notably in Netherlands, China, Taiwan, Japan and Germany. Our U.S. operations also have foreign currency exposure due to net monetary assets denominated in currencies other than the U.S. dollar.

Based on our foreign currency exposure as of September 30, 2017, a 10.0% fluctuation could impact our financial position, results of operations or cash flows by $2.0 to $3.0 million. Our attempts to hedge against these risks may not be successful and may result in a material adverse impact on our financial results and cash flow.

We enter into foreign exchange forward contracts to hedge a portion of our forecasted foreign currency-denominated expenses in the normal course of business and, accordingly, they are not speculative in nature. These foreign exchange forward contracts have maturities of up to twelve months. We have foreign exchange forward contracts with notional amounts of $36.4 million outstanding as of September 30, 2017. On October 12, 2017, the Company entered into foreign exchange forward contracts with notional amounts of $12.7 million.

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Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The consolidated financial statements of Kulicke and Soffa Industries, Inc. listed in the index appearing under Item 15 (a)(1) herein are filed as part of this Report under this Item 8.

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Kulicke & Soffa Industries, Inc.:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of operations, comprehensive income, changes in shareholders’ equity, and cash flows present fairly, in all material respects, the financial position of Kulicke & Soffa Industries, Inc. and its subsidiaries as of September 30, 2017 and October 1, 2016, and the results of their operations and their cash flows for each of the three years in the period ended September 30, 2017 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the index appearing under Item 15(a)(2) presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of September 30, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control over Financial Reporting under Item 9A. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company's internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

As described in Management’s Report on Internal Control over Financial Reporting included under Item 9A, management has excluded Liteq B.V (“Liteq”) from its assessment of internal control over financial reporting as of September 30, 2017, because it was acquired by the Company in a purchase business combination during the year ended September 30, 2017. We have also excluded Liteq from our audit of internal control over financial reporting. Liteq is a wholly-owned subsidiary of the Company whose total assets excluded from management’s assessment and our audit of internal control over financial reporting represent 2.5% of the related consolidated financial statement amounts as of September 30, 2017. No revenue was contributed by Liteq for the year ended September 30, 2017.

/s/ PricewaterhouseCoopers LLP

Singapore

November 16, 2017

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 KULICKE AND SOFFA INDUSTRIES, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands)

	As of
	September 30, 2017			October 1, 2016
ASSETS
Current assets:
Cash and cash equivalents	$	392,410		$	423,907
Restricted cash	530			—
Short-term investments	216,000			124,000
Accounts and notes receivable, net of allowance for doubtful accounts of $79 and $506, respectively	198,480			130,455
Inventories, net	122,023			87,295
Prepaid expenses and other current assets	23,939			15,285
Total current assets	953,382			780,942
Property, plant and equipment, net	67,762			50,342
Goodwill	56,318			81,272
Intangible assets, net	62,316			50,810
Deferred income taxes	27,771			16,822
Equity investments	1,502			—
Other assets	2,056			2,256
TOTAL ASSETS	$	1,171,107		$	982,444
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	51,354		$	41,813
Accrued expenses and other current liabilities	132,314			63,954
Income taxes payable	16,780			12,830
Total current liabilities	200,448			118,597
Financing obligation	16,074			16,701
Deferred income taxes	26,779			27,697
Other liabilities	14,870			12,931
TOTAL LIABILITIES	$	258,171		$	175,926
Commitments and contingent liabilities (Note 16)
SHAREHOLDERS' EQUITY:
Preferred stock, without par value:
Authorized 5,000 shares; issued - none	$	—		$	—
Common stock, no par value:
Authorized 200,000 shares; issued 83,953 and 83,231 respectively; outstanding 70,197 and 70,420 shares, respectively	506,515			498,676
Treasury stock, at cost, 13,756 and 12,811 shares, respectively	(157,604		)	(139,407		)
Retained earnings	561,986			449,975
Accumulated other comprehensive gain / (loss)	2,039			(2,726		)
TOTAL SHAREHOLDERS' EQUITY	$	912,936		$	806,518
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$	1,171,107		$	982,444

The accompanying notes are an integral part of these consolidated financial statements.

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KULICKE AND SOFFA INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

	Fiscal
	2017			2016			2015
Net revenue	$	809,041		$	627,192		$	536,471
Cost of sales	433,995			340,463			277,379
Gross profit	375,046			286,729			259,092
Selling, general and administrative	141,382			141,816			131,808
Research and development	100,203			92,374			90,033
Impairment charges	35,207			—			—
Operating expenses	276,792			234,190			221,841
Income from operations	98,254			52,539			37,251
Interest income	6,491			3,318			1,637
Interest expense	(1,059		)	(1,107		)	(1,183		)
Income from operations before income taxes	103,686			54,750			37,705
Income tax (benefit) / expense	(8,135		)	7,638			(12,934		)
Share of results of equity-method investee, net of tax	(190		)	—			—
Net income	$	112,011		$	47,112		$	50,639
Net income per share:
Basic	$	1.58		$	0.67		$	0.67
Diluted	$	1.55		$	0.67		$	0.67
Weighted average shares outstanding:
Basic	70,906			70,477			75,414
Diluted	72,063			70,841			75,659

The accompanying notes are an integral part of these consolidated financial statements.

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KULICKE AND SOFFA INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	Fiscal
	2017		2016			2015
Net income	$	112,011	$	47,112		$	50,639
Other comprehensive income (loss):
Foreign currency translation adjustment	1,960		624			(3,360		)
Unrecognized actuarial gain / (loss) on pension plan, net of tax	990		(1,791		)	19
	2,950		(1,167		)	(3,341		)
Derivatives designated as hedging instruments:
Unrealized gain / (loss) on derivative instruments, net of tax	669		(566		)	(1,008		)
Reclassification adjustment for loss on derivative instruments recognized, net of tax	1,146		104			1,008
Net increase/ (decrease) from derivatives designated as hedging instruments, net of tax	1,815		(462		)	—
Total other comprehensive income / (loss)	4,765		(1,629		)	(3,341		)
Comprehensive income	$	116,776	$	45,483		$	47,298

The accompanying notes are an integral part of these consolidated financial statements.

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KULICKE AND SOFFA INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

(in thousands)

	Common Stock					Treasury Stock			Retained earnings		Accumulated Other Comprehensive Income			Shareholders' Equity
	Shares		Amount
Balances as of September 27, 2014	76,626		$	479,116		$	(46,984	)	$	352,224	$	2,244		$	786,600
Issuance of stock for services rendered	83		1,049			—			—		—			1,049
Repurchase of common stock	(6,405	)	—			(77,872		)	—		—			(77,872		)
Exercise of stock options	75		694			—			—		—			694
Issuance of shares for market-based restricted stock and time-based restricted stock	861		—			—			—		—			—
Excess tax benefits from stock based compensation	—		540			—			—		—			540
Equity-based compensation expense	—		10,940			—			—		—			10,940
Components of comprehensive income:
Net income	—		—			—			50,639		—			50,639
Translation adjustment	—		—			—			—		(3,360		)	(3,360		)
Unamortized pension costs	—		—			—			—		19			19
Total comprehensive income	—		—			—			50,639		(3,341		)	47,298
Balances as of October 3, 2015	71,240		$	492,339		$	(124,856	)	$	402,863	$	(1,097	)	$	769,249
Issuance of stock for services rendered	50		551			—			—		—			551
Repurchase of common stock	(1,408	)	—			(14,551		)	—		—			(14,551		)
Exercise of stock options	53		410			—			—		—			410
Issuance of shares for market-based restricted stock and time-based restricted stock	485		—			—			—		—			—
Excess tax benefits from stock based compensation	—		197			—			—		—			197
Equity-based compensation expense	—		5,179			—			—		—			5,179
Components of comprehensive income:
Net income	—		—			—			47,112		—			47,112
Translation adjustment	—		—			—			—		624			624
Unrealized loss on derivative instruments	—		—			—			—		(462		)	(462		)
Unamortized pension costs	—		—			—			—		(1,791		)	(1,791		)
Total comprehensive income	—		—			—			47,112		(1,629		)	45,483
Balances as of October 1, 2016	70,420		$	498,676		$	(139,407	)	$	449,975	$	(2,726	)	$	806,518
Issuance of stock for services rendered	45		750			—			—		—			750
Repurchase of common stock	(945	)	—			(18,197		)	—		—			(18,197		)
Exercise of stock options	61		509			—			—		—			509
Issuance of shares for market-based restricted stock and time-based restricted stock	616		—			—			—		—			—
Reversal of excess tax benefits from stock based compensation	—		(4,392		)	—			—		—			(4,392		)
Equity-based compensation expense	—		10,972			—			—		—			10,972
Components of comprehensive income:
Net income	—		—			—			112,011		—			112,011
Translation adjustment	—		—			—			—		1,960			1,960
Unrealized gain on derivative instruments	—		—			—			—		1,815			1,815
Unamortized pension costs	—		—			—			—		990			990
Total comprehensive income	—		—			—			112,011		4,765			116,776
Balances as of September 30, 2017	70,197		$	506,515		$	(157,604	)	$	561,986	$	2,039		$	912,936

The accompanying notes are an integral part of these consolidated financial statements.

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KULICKE AND SOFFA INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	Fiscal
	2017			2016			2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	112,011		$	47,112		$	50,639
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,257			16,230			18,972
Impairment charges	35,207			—			—
Equity-based compensation and employee benefits	11,722			5,730			11,989
Reversal of excess tax benefits (Excess tax benefits from stock based compensation)	4,392			(197		)	(540		)
Adjustment for doubtful accounts	(136		)	(115		)	478
Adjustment for inventory valuation	10,925			6,676			3,978
Deferred taxes	(17,499		)	(15,530		)	(16,738		)
Gain on disposal of property, plant and equipment	(999		)	(55		)	(71		)
Unrealized foreign currency translation	1,362			1,318			(6,631		)
Share of results of equity-method investee	(190		)	—			—
Changes in operating assets and liabilities, net of assets and liabilities assumed in businesses combinations:
Accounts and notes receivable	(67,879		)	(22,139		)	72,304
Inventory	(47,425		)	(16,340		)	(14,471		)
Prepaid expenses and other current assets	(8,468		)	1,599			493
Accounts payable, accrued expenses and other current liabilities	78,254			34,106			(32,766		)
Income taxes payable	3,946			10,492			(1,968		)
Other, net	4,830			(480		)	2,207
Net cash provided by operating activities	136,310			68,407			87,875
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of business, net of cash acquired	(27,119		)	—			(93,153		)
Purchases of property, plant and equipment	(25,590		)	(6,218		)	(10,269		)
Proceeds from sales of property, plant and equipment	1,352			1,053			180
Purchase of equity investments	(1,312		)	—			—
Purchase of short term investments	(305,000		)	(124,000		)	(1,630		)
Maturity of short term investments	213,000			—			10,763
Changes in restricted cash	(530		)	—			—
Net cash used in investing activities	(145,199		)	(129,165		)	(94,109		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment on debts	(604		)	(542		)	(10,815		)
Proceeds from short term loans	—			—			837
Proceeds from exercise of common stock options	509			410			694
Repurchase of common stock	(18,197		)	(14,551		)	(75,715		)
(Reversal of excess tax benefits) Excess tax benefits from stock based compensation	(4,392		)	197			540
Net cash used in financing activities	(22,684		)	(14,486		)	(84,459		)
Effect of exchange rate changes on cash and cash equivalents	76			537			1,326
Changes in cash and cash equivalents	(31,497		)	(74,707		)	(89,367		)
Cash and cash equivalents at beginning of period	423,907			498,614			587,981
Cash and cash equivalents at end of period	$	392,410		$	423,907		$	498,614
CASH PAID FOR:
Interest	$	1,059		$	1,107		$	1,183
Income taxes	$	8,283		$	10,020		$	5,192

The accompanying notes are an integral part of these consolidated financial statements. 

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Table of Contents

KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1: BASIS OF PRESENTATION

These consolidated financial statements include the accounts of Kulicke and Soffa Industries, Inc. and its subsidiaries (the “Company”), with appropriate elimination of intercompany balances and transactions.

Fiscal Year

Each of the Company's first three fiscal quarters ends on the Saturday that is 13 weeks after the end of the immediately preceding fiscal quarter. The fourth quarter of each fiscal year ends on the Saturday closest to September 30. In fiscal years consisting of 53 weeks, the fourth quarter will consist of 14 weeks. The 2017, 2016, and 2015 fiscal years ended on September 30, 2017, October 1, 2016 and October 3, 2015, respectively.

Nature of Business

The Company designs, manufactures and sells capital equipment and tools as well as services, maintains, repairs and upgrades equipment, all used to assemble semiconductor devices. The Company's operating results depend upon the capital and operating expenditures of semiconductor device manufacturers, integrated device manufacturers, outsourced semiconductor assembly and test providers (“OSATs”), and other electronics manufacturers, including automotive electronics suppliers, worldwide which, in turn, depend on the current and anticipated market demand for semiconductors and products utilizing semiconductors. The semiconductor industry is highly volatile and experiences downturns and slowdowns which can have a severe negative effect on the semiconductor industry's demand for semiconductor capital equipment, including assembly equipment manufactured and sold by the Company and, to a lesser extent, tools, including those sold by the Company. These downturns and slowdowns have in the past adversely affected the Company's operating results. The Company believes such volatility will continue to characterize the industry and the Company's operations in the future.

Use of Estimates

The preparation of consolidated financial statements requires management to make assumptions, estimates and judgments that affect the reported amounts of assets and liabilities, net revenue and expenses during the reporting periods, and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. On an ongoing basis, management evaluates estimates, including but not limited to, those related to accounts receivable, reserves for excess and obsolete inventory, carrying value and lives of fixed assets, goodwill and intangible assets, valuation allowances for deferred tax assets and deferred tax liabilities, repatriation of un-remitted foreign subsidiary earnings, equity-based compensation expense, and warranties. Management bases its estimates on historical experience and on various other assumptions believed to be reasonable. As a result, management makes judgments regarding the carrying values of the Company's assets and liabilities that are not readily apparent from other sources. Authoritative pronouncements, historical experience and assumptions are used as the basis for making estimates, and on an ongoing basis, management evaluates these estimates. Actual results may differ from these estimates.

Vulnerability to Certain Concentrations

Financial instruments which may subject the Company to concentrations of credit risk as of September 30, 2017 and October 1, 2016 consisted primarily of trade receivables. The Company manages credit risk associated with investments by investing its excess cash in highly rated debt instruments of the U.S. Government and its agencies, financial institutions, and corporations. The Company has established investment guidelines relative to diversification and maturities designed to maintain safety and liquidity. These guidelines are periodically reviewed and modified as appropriate. The Company does not have any exposure to sub-prime financial instruments or auction rate securities.

The Company's trade receivables result primarily from the sale of semiconductor equipment, related accessories and replacement parts, and tools to a relatively small number of large manufacturers in a highly concentrated industry. Write-offs of uncollectible accounts have historically not been significant; however, the Company monitors its customers' financial strength to reduce the risk of loss.

The Company's products are complex and require raw materials, components and subassemblies having a high degree of reliability, accuracy and performance. The Company relies on subcontractors to manufacture many of these components and subassemblies and it relies on sole source suppliers for some important components and raw material inventory.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Foreign Currency Translation and Remeasurement

The majority of the Company's business is transacted in U.S. dollars; however, the functional currencies of some of the Company's subsidiaries are their local currencies. In accordance with ASC No. 830, Foreign Currency Matters (“ASC 830”), for a subsidiary of the Company that has a functional currency other than the U.S. dollar, gains and losses resulting from the translation of the functional currency into U.S. dollars for financial statement presentation are not included in determining net income, but are accumulated in the cumulative translation adjustment account as a separate component of shareholders' equity (accumulated other comprehensive income / (loss)). Under ASC 830, cumulative translation adjustments are not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries. Gains and losses resulting from foreign currency transactions are included in the determination of net income.

The Company's operations are exposed to changes in foreign currency exchange rates due to transactions denominated in currencies other than the location's functional currency. The Company is also exposed to foreign currency fluctuations that impact the remeasurement of net monetary assets of those operations whose functional currency, the U.S. dollar, differs from their respective local currencies, most notably in Israel, Malaysia, Singapore and Switzerland. In addition to net monetary remeasurement, the Company has exposures related to the translation of subsidiary financial statements from their functional currency, the local currency, into its reporting currency, the U.S. dollar, most notably in Netherlands, China, Taiwan, Japan and Germany. The Company's U.S. operations also have foreign currency exposure due to net monetary assets denominated in currencies other than the U.S. dollar.

Derivative Financial Instruments

The Company’s primary objective for holding derivative financial instruments is to manage the fluctuation in foreign exchange rates and accordingly is not speculative in nature. The Company’s international operations are exposed to changes in foreign exchange rates as described above. The Company has established a program to monitor the forecasted transaction currency risk to protect against foreign exchange rate volatility. Generally, the Company uses foreign exchange forward contracts in these hedging programs. The instruments, which have maturities of up to twelve months, are recorded at fair value and are included in prepaid expenses and other current assets, or accrued expenses and other current liabilities.

Our accounting policy for derivative financial instruments is based on whether they meet the criteria for designation as a cash flow hedge. A designated hedge with exposure to variability in the functional currency equivalent of the future foreign currency cash flows of a forecasted transaction is referred to as a cash flow hedge. The criteria for designating a derivative as a cash flow hedge include the assessment of the instrument’s effectiveness in risk reduction, matching of the derivative instrument to its underlying transaction, and the assessment of the probability that the underlying transaction will occur. For derivatives with cash flow hedge accounting designation, we report the after-tax gain / (loss) from the effective portion of the hedge as a component of accumulated other comprehensive income / (loss) and reclassify it into earnings in the same period in which the hedged transaction affects earnings and in the same line item on the consolidated statement of operations as the impact of the hedged transaction. Derivatives that we designate as cash flow hedges are classified in the consolidated statement of cash flows in the same section as the underlying item, primarily within cash flows from operating activities.

The hedge effectiveness of these derivative instruments is evaluated by comparing the cumulative change in the fair value of the hedge contract with the cumulative change in the fair value of the forecasted cash flows of the hedged item.

If a cash flow hedge is discontinued because it is no longer probable that the original hedged transaction will occur as previously anticipated, the cumulative unrealized gain or loss on the related derivative is reclassified from accumulated other comprehensive income / (loss) into earnings. Subsequent gain / (loss) on the related derivative instrument is recognized into earnings in each period until the instrument matures, is terminated, is re-designated as a qualified cash flow hedge, or is sold. Ineffective portions of cash flow hedges, as well as amounts excluded from the assessment of effectiveness, are recognized in earnings.

Cash Equivalents

The Company considers all highly liquid investments with original maturities of three months or less when purchased to be cash equivalents. Cash equivalents are measured at fair value based on level one measurement, or quoted market prices, as defined by ASC No. 820, Fair Value Measurements and Disclosures. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for cash equivalents.

Investments

Investments, other than cash equivalents, are classified as “trading,” “available-for-sale” or “held-to-maturity,” in accordance with ASC No. 320, Investments-Debt & Equity Securities, and depending upon the nature of the investment, its ultimate maturity date in the case of debt securities, and management's intentions with respect to holding the securities. Investments classified as “trading”

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

are reported at fair market value, with unrealized gains or losses included in earnings. Investments classified as “available-for-sale” are reported at fair market value, with net unrealized gains or losses reflected as a separate component of shareholders' equity (accumulated other comprehensive income (loss)). The fair market value of trading and available-for-sale securities is determined using quoted market prices at the balance sheet date. Investments classified as held-to-maturity are reported at amortized cost. Realized gains and losses are determined on the basis of specific identification of the securities sold.

Equity Investments

The Company applies the equity method of accounting to investments that provide it with ability to exercise significant influence over the entities in which it lacks controlling financial interest and is not a primary beneficiary. Our proportionate share of the income or loss is recognized on a one-quarter lag and is recorded as share of results of equity-method investee, net of tax.

Allowance for Doubtful Accounts

The Company maintains allowances for doubtful accounts for estimated losses resulting from its customers' failure to make required payments. If the financial condition of the Company's customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The Company is also subject to concentrations of customers and sales to a few geographic locations, which could also impact the collectability of certain receivables. If global or regional economic conditions deteriorate or political conditions were to change in some of the countries where the Company does business, it could have a significant impact on the results of operations, and the Company's ability to realize the full value of its accounts receivable.

Inventories

Inventories are stated at the lower of cost (on a first-in first-out basis) or net realizable value. The Company generally provides reserves for obsolete inventory and for inventory considered to be in excess of demand. Demand is generally defined as 18 months forecasted future consumption for equipment, 24 months forecasted future consumption for spare parts, and 12 months forecasted future consumption for tools. Forecasted consumption is based upon internal projections, historical sales volumes, customer order activity and a review of consumable inventory levels at customers' facilities. The Company communicates forecasts of its future consumption to its suppliers and adjusts commitments to those suppliers accordingly. If required, the Company reserves the difference between the carrying value of its inventory and the lower of cost or net realizable value, based upon projections about future consumption, and market conditions. If actual market conditions are less favorable than projections, additional inventory reserves may be required.

Inventory reserve provision for certain subsidiaries is determined based on management's estimate of future consumption for equipment and spare parts. This estimate is based on historical sales volumes, internal projections and market developments and trends.

Property, Plant and Equipment

Property, plant and equipment are carried at cost. The cost of additions and those improvements which increase the capacity or lengthen the useful lives of assets are capitalized while repair and maintenance costs are expensed as incurred. Depreciation and amortization are provided on a straight-line basis over the estimated useful lives as follows: buildings 25 years; machinery, equipment, furniture and fittings 3 to 10 years; and leasehold improvements are based on the shorter of the life of lease or life of asset. Purchased computer software costs related to business and financial systems are amortized over a five-year period on a straight-line basis. Land is not depreciated.

Valuation of Long-Lived Assets

In accordance with ASC No. 360, Property, Plant & Equipment ("ASC 360"), the Company's property, plant and equipment is tested for impairment based on undiscounted cash flows when triggering events occur, and if impaired, written-down to fair value based on either discounted cash flows or appraised values. ASC 360 also provides a single accounting model for long-lived assets to be disposed of by sale and establishes additional criteria that would have to be met to classify an asset as held for sale. The carrying amount of an asset or asset group is not recoverable to the extent it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset or asset group. Estimates of future cash flows used to test the recoverability of a long-lived asset or asset group must incorporate the entity's own assumptions about its use of the asset or asset group and must factor in all available evidence.

ASC 360 requires that long-lived assets be tested for recoverability whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. Such events include significant under-performance relative to historical internal forecasts or projected future operating results; significant changes in the manner of use of the assets; significant negative industry or economic trends; or significant changes in market capitalization. During the fiscal years ended September 30, 2017 and October 1,

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

2016, no "triggering" events occurred.

Accounting for Impairment of Goodwill

The Company operates two reportable segments: Capital Equipment and APS. Goodwill was recorded for the acquisitions of Orthodyne Electronics Corporation ("Orthodyne"), Assembléon B.V. ("Assembléon") and Liteq B.V. ("Liteq") in fiscal 2009, 2015 and 2017, respectively.

ASC No. 350, Intangibles-Goodwill and Other ("ASC 350") requires goodwill and intangible assets with indefinite lives to be reviewed for impairment annually, or more frequently if circumstances indicate a possible impairment. We assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, after assessing the qualitative factors, a company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying value, then performing the two-step impairment test is unnecessary. However, if a company concludes otherwise, then it is required to perform the first step of the two-step goodwill impairment test. If the carrying value of a reporting unit exceeds its fair value in the first step of the test, then a company is required to perform the second step of the goodwill impairment test to measure the amount of the reporting unit's goodwill impairment loss, if any. 

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. This ASU will be effective for us beginning in our first quarter of 2021 and early adoption is permitted. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04. This eliminates the requirement to perform step 2 of the goodwill impairment test.

In fiscal 2017 and 2016, the Company chose to bypass the qualitative assessment and proceed directly to performing the quantitative evaluation of the fair value of the reporting unit, to compare against the carrying value of the reporting unit.

As part of the annual evaluation, the Company performs an impairment test of its goodwill in the fourth quarter of each fiscal year to coincide with the completion of its annual forecasting and refreshing of its business outlook processes. On an ongoing basis, the Company monitors if a “triggering” event has occurred that may have the effect of reducing the fair value of a reporting unit below its respective carrying value. Adverse changes in expected operating results and/or unfavorable changes in other economic factors used to estimate fair values could result in a non-cash impairment charge in the future.

Impairment assessments inherently involve judgment as to the assumptions made about the expected future cash flows and the impact of market conditions on those assumptions. Future events and changing market conditions may impact the assumptions as to prices, costs, growth rates or other factors that may result in changes in the estimates of future cash flows. Although the Company believes the assumptions that it has used in testing for impairment are reasonable, significant changes in any one of the assumptions could produce a significantly different result. Indicators of potential impairment may lead the Company to perform interim goodwill impairment assessments, including significant and unforeseen customer losses, a significant adverse change in legal factors or in the business climate, a significant adverse action or assessment by a regulator, a significant stock price decline or unanticipated competition.

For further information on goodwill and intangible assets, see Note 5 below.

Revenue Recognition

In accordance with ASC No. 605, Revenue Recognition, the Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, the collectability is reasonably assured, and customer acceptance, when applicable, has been received or we otherwise have been released from customer acceptance obligations. If terms of the sale provide for a customer acceptance period, revenue is recognized upon the expiration of the acceptance period or customer acceptance, whichever occurs first. Services revenue is generally recognized over the period that the services are provided.

Shipping and handling costs billed to customers are recognized in net revenue. Shipping and handling costs paid by the Company are included in cost of sales.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Research and Development

The Company charges research and development costs associated with the development of new products to expense when incurred. In certain circumstances, pre-production machines that the Company intends to sell are carried as inventory until sold.

Income Taxes

In accordance with ASC No. 740, Income Taxes, deferred income taxes are determined using the balance sheet method. The Company records a valuation allowance to reduce its deferred tax assets to the amount it expects is more likely than not to be realized. While the Company has considered future taxable income and its ongoing tax planning strategies in assessing the need for the valuation allowance, if it were to determine that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, an adjustment to the deferred tax asset would increase income in the period when such determination is made. Likewise, should the Company determine it would not be able to realize all or part of its net deferred tax assets in the future, an adjustment to the deferred tax asset would decrease income in the period when such determination is made.

In accordance with ASC No. 740 Topic 10, Income Taxes, General (“ASC 740.10”), the Company accounts for uncertain tax positions taken or expected to be taken in its income tax return. Under ASC 740.10, the Company utilizes a two-step approach for evaluating uncertain tax positions. Step one, or recognition, requires a company to determine if the weight of available evidence indicates a tax position is more likely than not to be sustained upon examination solely based on its technical merit. Step two, or measurement, is based on the largest amount of benefit, which is more likely than not to be realized on settlement with the taxing authority, including resolution of related appeals or litigation processes, if any.

The Financial Accounting Standards Board ("FASB") has issued Accounting Standard Update ("ASU") 2015-17, Income Taxes (Topic 740), regarding the presentation of deferred income taxes. Under the new standard, both deferred tax liabilities and assets are required to be classified as noncurrent in a classified balance sheet. ASU 2015-17 will become effective for fiscal years, and the interim periods within those years, beginning after December 15, 2016 (our fiscal 2018), with early adoption allowed. During the first quarter of fiscal 2016, we elected to prospectively adopt ASU 2015-17, thus reclassifying current deferred taxes to noncurrent on the accompanying Consolidated Balance Sheet.

Equity-Based Compensation

The Company accounts for equity-based compensation under the provisions of ASC No. 718, Compensation - Stock Compensation (“ASC 718”). ASC 718 requires the recognition of the fair value of the equity-based compensation in net income. Compensation expense associated with market-based restricted stock is determined using a Monte-Carlo valuation model, and compensation expense associated with time-based and performance-based restricted stock is determined based on the number of shares granted and the fair value on the date of grant. The fair value of the Company's stock option awards are estimated using a Black-Scholes option valuation model. In addition, the calculation of equity-based compensation costs requires that the Company estimate the number of awards that will be forfeited during the vesting period. The fair value of equity-based awards is amortized over the vesting period of the award and the Company elected to use the straight-line method for awards granted after the adoption of ASC 718.

Earnings per Share

Earnings per share (“EPS”) are calculated in accordance with ASC No. 260, Earnings per Share. Basic EPS include only the weighted average number of common shares outstanding during the period. Diluted EPS include the weighted average number of common shares and the dilutive effect of stock options, restricted stock and share unit awards and other convertible instruments outstanding during the period, when such instruments are dilutive.

In accordance with ASC No. 260.10.55, Earnings per Share - Implementation & Guidance, the Company treats all outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends as participating in undistributed earnings with common shareholders. Awards of this nature are considered participating securities and the two-class method of computing basic and diluted EPS must be applied.

Accounting for Business Acquisitions

The Company accounts for business acquisitions in accordance with ASC No. 805, Business Combinations. The fair value of the net assets acquired and the results of operations of the acquired businesses are included in the Consolidated Financial Statements from the acquisition date forward. The Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and results of operations during the reporting period. Estimates are used in accounting for, among other things, the fair value of acquired net operating assets, property and equipment, deferred revenue, intangible assets and related deferred tax liabilities, useful lives of plant and equipment, and amortizable lives of acquired intangible assets. Any excess of the

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

purchase consideration over the identified fair value of the assets and liabilities acquired is recognized as goodwill. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change materially between the preliminary allocation and end of the purchase price allocation period.

Restructuring charges

Restructuring charges may consist of voluntary or involuntary severance-related charges, asset-related charges and other costs due to exit activities. We recognize voluntary termination benefits when an employee accepts the offered benefit arrangement. We recognize involuntary severance-related charges depending on whether the termination benefits are provided under an ongoing benefit arrangement or under a one-time benefit arrangement. If the former, we recognize the charges once they are probable and the amounts are estimable. If the latter, we recognize the charges once the benefits have been communicated to employees.

Recent Accounting Pronouncements

Restricted Cash

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force). This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU will be effective for us beginning in our first quarter of 2019. Early adoption is permitted beginning in our first quarter of fiscal 2018. We do not expect the adoption of the ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Income Taxes

In October 2016, the FASB issued ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory. The new guidance requires the tax effects of intercompany transactions (other than transfers of inventory) to be recognized currently. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2017 (our fiscal 2019), including interim periods within those years, with an option to early adopt. The modified retrospective approach will be required for transition to the new guidance, with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the balance of intellectual property transferred between our subsidiaries as of the adoption date. We are currently evaluating the timing of the adoption of this ASU.

Stock Compensation

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. This ASU will be effective for us beginning in our first quarter of fiscal 2018. In the year of adoption, the Company anticipates we will recognize unrealized excess tax benefits of $5.4 million in retained earnings.

In May 2017, the FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. This ASU specifies the modification accounting applicable to any entity which changes the terms or conditions of a share-based payment award. This ASU will be effective for us beginning in our first quarter of fiscal 2019. Early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. This ASU will be effective for us beginning in our first quarter of fiscal 2020 and early adoption is permitted. The adoption of this ASU will result in an increase to our consolidated balance sheets for these right of use assets and corresponding liabilities. However, the ultimate impact of adopting this ASU will depend on the Company's lease portfolio as of the adoption date. We are currently evaluating the timing and other effects of the adoption of this ASU on our financial statements.

Financial Instruments

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU replaces the impairment methodology in current GAAP, which delays recognition of credit losses until it is probable a loss has been incurred, with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU will be effective for us beginning in our first quarter of fiscal 2020. Early adoption is permitted beginning in our first quarter of 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

Derivatives and Hedging

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (Topic 815). The new guidance expands and refines hedge accounting for both financial and non-financial risks. The new guidance also modifies disclosure requirements for hedging activities. The new guidance will be effective for us beginning in our first quarter of fiscal 2020, and early adoption is permitted in any interim period. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements as well as whether to adopt the new guidance early.

Business Combinations

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The new guidance provides a new framework for determining whether business development transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This ASU will be effective for us beginning in our first quarter of 2019. Earlier application is permitted for acquisition or derecognition events that occurred prior to issuance date or effective date of the guidance only when the transaction has not been reported in financial statements that have been issued or made available for issuance. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Intangibles—Goodwill and Other

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04.

Statement of Cash Flows

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the classification of certain specific cash flow issues including debt prepayment or extinguishment costs, settlement of certain debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of certain insurance claims and distributions received from equity method investees. This ASU will be effective for us beginning in our first quarter of 2019 and early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Revenue Recognition

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled when products are transferred to customers.

Subsequently, the FASB has issued the following standards related to ASU 2014-09: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (“ASU 2016-08”); ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing (“ASU 2016-10”); ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients (“ASU 2016-12”); and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers (“ASU 2016-20”). The Company must adopt ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20 with ASU 2014-09 (collectively, the “new revenue standards”).

The new revenue standards may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The new standard is effective for annual reporting periods beginning after December 15, 2017. The new standard permits companies to early adopt the new standard, but not before annual reporting periods beginning after December 15, 2016. The Company will not early adopt the new standard and therefore the new standard will be effective for the Company in the first quarter of its fiscal 2019. We have made progress in our review of the impact of this guidance on revenue

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

related activities, and are monitoring additional changes, modifications, clarifications or interpretations undertaken by the FASB. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the Company's revenue portfolio as of the adoption date.

NOTE 2: RESTRUCTURING

In fiscal 2016, the Company implemented a restructuring program to streamline its international operations and functions as well as to consolidate its organization structure to achieve our cost-reduction, productivity and efficiency initiatives.

In fiscal 2017, the Company implemented a restructuring program to reallocate resources with respect to the EA/APMR business unit. As part of this plan, $3.8 million of restructuring related costs, consisting of $3.3 million of severance and $0.5 million of other exit costs have been reflected in the Company’s consolidated financial statements as of and for fiscal 2017.

The following table is a summary of activity related to the Company’s restructuring and other charges for fiscal 2017, 2016, and 2015:

	Fiscal Year 2017 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	37	$	3,273	$	(418	)	$	2,892
Other exit costs	6,525		38		(4,827		)	1,736
	6,562		3,311		(5,245		)	4,628

	Fiscal Year 2016 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	1,538	$	661	$	(2,162	)	$	37
Other exit costs	—		7,983		(1,458		)	6,525
	1,538		8,644		(3,620		)	6,562

	Fiscal Year 2015 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	—	$	1,850	$	(312	)	$	1,538

(1) Included within accrued expenses and other current liabilities on the Consolidated Balance Sheets.

(2) Provision for severance and benefits and other exit costs are included within selling, general and administrative expenses on the Consolidated Statements of Operations.

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NOTE 3: BALANCE SHEET COMPONENTS

The following tables reflect the components of significant balance sheet accounts as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017			October 1, 2016
Short term investments, available-for-sale(1)	$	216,000		$	124,000
Inventories, net:
Raw materials and supplies (2)	$	44,239		$	26,876
Work in process (2)	40,827			24,333
Finished goods (2)	61,596			57,166
	146,662			108,375
Inventory reserves	(24,639		)	(21,080		)
	$	122,023		$	87,295
Property, plant and equipment, net:
Land	$	2,182		$	—
Buildings and building improvements	50,910			34,472
Leasehold improvements	9,882			19,963
Data processing equipment and software (2)	34,700			32,975
Machinery, equipment, furniture and fixtures	68,143			54,730
	165,817			142,140
Accumulated depreciation(2)	(98,055		)	(91,798		)
	$	67,762		$	50,342
Accrued expenses and other current liabilities:
Wages and benefits	$	47,411		$	24,248
Accrued customer obligations (3)	50,497			13,077
Commissions and professional fees	8,555			10,908
Deferred rent	1,930			2,920
Severance (4)	3,828			1,296
Other	20,093			11,505
	$	132,314		$	63,954

(1) All short-term investments were classified as available-for-sale and were measured at fair value based on level one measurement, or quoted market prices, as defined by ASC 820. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for short-term investments. The Company did not recognize any realized gains or losses on the sale of investments during the years ended 2017 and 2016.

(2) Certain balances as at October 1, 2016 relating to Inventories and Property, plant and equipment have been reclassified for comparative purposes. These reclassifications have no impact to the Consolidated Balance Sheets as at October 1, 2016.

(3) Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

(4) Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.2 million (as of Oct 1, 2016: $0.8 million), and other severance payments which are not part of the Company's plan to streamline its global operations and functions.

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NOTE 4: BUSINESS COMBINATIONS

Acquisition of Liteq

On July 2, 2017, Kulicke and Soffa Holland Holdings B.V. (“KSHH”), the Company's wholly owned subsidiary, entered into a Share Sale and Purchase Agreement (the “Agreement”) with the shareholders of Liteq to purchase all of the outstanding equity interests of Liteq. Liteq is a lithography solutions provider for advanced packaging.

The purchase price consists of EUR 25.0 million (approximately $28.6 million) cash paid at closing and additional potential earn-out payments based on Liteq's cumulative pre-tax earnings and cumulative engineering expenses for fiscal 2018 to 2022. The acquisition expands the Company's presence in the advanced packaging market.

The acquisition of Liteq was accounted for in accordance with ASC No. 805, Business Combinations, using the acquisition method. The Company has estimated the preliminary fair value of acquired assets and liabilities as of the date of acquisition based on information available. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change materially between the preliminary allocation and end of the purchase price allocation period of July 2, 2018. Any changes in these estimates may have a material impact on our Consolidated Results of Operations or Consolidated Balance Sheets.

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	July 2, 2017
Prepaid expenses and other current assets	$	199
Property, plant and equipment	107
Intangibles	18,060
Goodwill	10,253
Accounts payable	(157		)
Accrued expenses and other current liabilities	(103		)
Deferred tax liabilities	(1,240		)
Total purchase price, net of cash acquired	$	27,119

Tangible net assets (liabilities) were valued at their respective carrying amounts, which the Company believes approximate their current fair values at the acquisition date.

The valuation of identifiable intangible assets acquired, representing developed technology, reflects management’s estimates based on, among other factors, use of established valuation methods. The developed technology was determined using the relief from royalty method, and is amortized over the period of estimated benefit using the straight-line method and the estimated useful lives of ten years. The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired and includes the value of expected future cash flows of Liteq from expected synergies with our other affiliates and other unidentifiable intangible assets. None of the goodwill recorded as part of the acquisition will be deductible for income tax purposes.

In connection with the acquisition of Liteq, the Company recorded deferred tax liabilities relating to the acquired intangible assets, which are partially offset by the net amount of acquired net operating losses. The net amount of acquired net operating losses is comprised of net operating losses less the tax reserves and valuation allowance.

For the year ended September 30, 2017, the acquired business contributed a net loss of $1.4 million.

During fiscal 2017, the Company incurred $0.3 million of expenses related to the acquisition, which is included within selling, general and administrative expense in the consolidated statements of operations.

The following unaudited pro forma information presents the combined results of operations as if the acquisition had been completed on October 3, 2015, the beginning of the comparable prior annual reporting period. The unaudited pro forma results include: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of the post-acquisition share-based compensation and other compensation expense; and (iii) the associated tax impact on these unaudited pro forma adjustments.

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The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the periods presented, nor are they indicative of future results of operations:

	Fiscal
(in thousands, except for per share information)	2017		2016
Revenue	$	809,041	$	627,192
Net income / (loss)	105,966		41,186
Basic income per common share	1.49		0.58
Diluted income per common share	$	1.47	$	0.58

Acquisition of Assembléon

On January 9, 2015, Kulicke & Soffa Holdings B.V. (“KSH”), the Company's wholly owned subsidiary, acquired all of the outstanding equity interests of Assembléon.

The cash purchase price of approximately $97.4 million (EUR 80 million) consisted of $72.5 million for 100% of the equity of Assembléon and $24.9 million which was used by Assembléon to settle intercompany loans with its parent company.

The acquisition of Assembléon was accounted for in accordance with ASC No. 805, Business Combinations, using the acquisition method. On January 9, 2016, the Company finalized the valuation of the tangible and identifiable intangible assets and liabilities in connection with the acquisition of Assembléon and no further adjustment was recorded.

On September 27, 2016, the escrow due date was extended until the conclusion of a legal proceeding which the Company was indemnified under the share purchase agreement. As of October 1, 2016, $8.7 million (EUR 7.7 million) was held in escrow.

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	January 9, 2015
Accounts receivable	$	9,941
Inventories	19,861
Prepaid expenses and other current assets	2,322
Deferred tax asset	157
Property, plant and equipment	531
Intangibles	61,463
Goodwill	39,726
Deferred income taxes	638
Accounts payable	(14,386		)
Borrowings financial institutions	(9,491		)
Accrued expenses and other current liabilities	(10,561		)
Income taxes payable	(1,933		)
Deferred tax liabilities	(5,115		)
Total purchase price, net of cash acquired	$	93,153

Tangible net assets (liabilities) were valued at their respective carrying amounts, which the Company believes approximate their current fair values at the acquisition date.

The valuation of identifiable intangible assets acquired reflects management’s estimates based on, among other factors, use of established valuation methods. The technology/software and product brand name was determined using the relief from royalty method. Customer relationships were valued by using multi-period excess earnings method. Identifiable intangible assets with definite lives are amortized over the period of estimated benefit using the straight-line method and the estimated useful lives of six to fifteen years. The straight-line method of amortization represents the Company’s best estimate of the distribution of the

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

economic value of the identifiable intangible assets. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired. None of the goodwill recorded as part of the acquisition will be deductible for income tax purposes.

In connection with the acquisition of Assembléon, the Company recorded deferred tax liabilities relating to the acquired intangible assets, which is partially offset by the net amount of acquired net operating losses. The net amount of acquired net operating losses is comprised of net operating losses less the tax reserves and valuation allowance. The Company has recorded long-term income tax payable due to uncertain tax positions with respect to certain Assembléon entities.

For the year ended October 3, 2015, the acquired business contributed revenue of $59.3 million and net loss of $2.0 million.

During fiscal 2015, the Company incurred $0.9 million of expenses related to the acquisition, which is included within selling, general and administrative expense in the consolidated statements of income.

The following unaudited pro forma information presents the combined results of operations as if the acquisition had been completed on September 29, 2013, the beginning of the comparable prior annual reporting period. The unaudited pro forma results include: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of the post-acquisition share-based compensation and other compensation expense; and (iii) the associated tax impact on these unaudited pro forma adjustments.

The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the periods presented, nor are they indicative of future results of operations:

	Fiscal
(in thousands)	2015
Revenue	$	562,754
Net income / (loss)	45,303
Basic income per common share	0.60
Diluted income per common share	0.60

NOTE 5: GOODWILL AND INTANGIBLE ASSETS

Goodwill

Intangible assets classified as goodwill are not amortized. During fourth quarter of fiscal 2017, the Company recorded goodwill relating to the acquisition of Liteq. For further information on the acquisition of Liteq, please see Note 4.

The goodwill established in connection with our acquisitions of Assembléon, Orthodyne and Liteq represents the estimated future economic benefits arising from the assets we acquired that did not qualify to be identified and recognized individually. The goodwill also includes the value of expected future cash flows of Assembléon, Orthodyne and Liteq, expected synergies with our other affiliates and other unidentifiable intangible assets. The Company performs an annual impairment test of its goodwill during the fourth quarter of each fiscal year, which coincides with the completion of its annual forecasting and refreshing of business outlook process.

During the third quarter of the fiscal year ended September 30, 2017, the Company concluded that a triggering event had occurred in connection with the EA/APMR reporting unit (the former Assembléon) based on the results of an updated long-term financial outlook for the EA/APMR business that was conducted as part of the Company’s strategic review during the third quarter due to the lower demand as compared to forecast. The projection used in the fiscal 2016 annual impairment test had been developed based on the fiscal 2016 actual results, where the actual revenue had exceeded the forecast. This updated outlook projected that the near-term projected cash flows are expected to be lower than previously forecasted due to softer near-term demand in the System-in-package market. Under ASC 350, the Company is required to test its goodwill and intangible assets for impairment annually or when a triggering event has occurred that would indicate it is more likely than not that the fair value of the reporting unit is less than the carrying value including goodwill and intangible assets. Accordingly, the Company performed the first step of the goodwill impairment test for the EA/APMR reporting unit.

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The Company used a discounted cash flow model to determine the fair value of the EA/APMR reporting unit. The cash flow projections used within the discounted cash flow model were prepared using the forecasted financial results of the reporting unit, which was based upon underlying estimates of the total market size using independent third party industry reports, and market share data developed using the combination of independent third party data and our internal data. Significant assumptions used to determine fair value of the EA/APMR reporting unit include terminal growth rate of 2.5%, cost reduction initiatives including restructuring, working capital, tax rate and a weighted average cost of capital (discount rate) of 10.45%.

Following the Company's early adoption of ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment in the third quarter of fiscal 2017, the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment (i.e. Step 2 of the goodwill impairment test) was eliminated. Accordingly, the Company's impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value. Based on the calculation, the Company determined that the carrying amount of the EA/APMR reporting unit exceeded its fair value by $35.2 million, requiring an impairment charge of this amount in the third quarter of fiscal 2017. The goodwill impairment charge, which is a non-cash charge, has been reflected in the Company’s Consolidated Statements of Operations for the fiscal year ended September 30, 2017.

In connection with the evaluation of the goodwill impairment in the EA/APMR reporting unit, the Company assessed tangible and intangible assets for impairment prior to performing the first step of the goodwill impairment test. As a result of this analysis, it was determined that there were no impairment charges to record related to these assets for the nine months ended September 30, 2017. No triggering event had occurred for the wedge bonder reporting unit (the former Orthodyne).

During the fourth quarter of fiscal 2017, the Company reorganized its reportable segments into (i) Capital Equipment and (ii) Aftermarket Products and Services ("APS") and realigned our reporting units to reflect the revised reporting structure. As a result of this re-alignment, the Company has five reporting units as of September 30, 2017, with two reporting units within the Capital Equipment reportable segment and three reporting units in the APS reportable segment. Please refer to Note 15, "Segment Information" for additional information on the operating and reportable segments realignment. The Company evaluated goodwill for potential impairment before and after this realignment and determined that the fair value of each component individually and in aggregate exceeded their carrying values.

The following table summarizes the Company's recorded goodwill by reportable segments as of September 30, 2017 and October 1, 2016:

(in thousands)	Capital Equipment			APS			Total
Balance at October 3, 2015 and October 1, 2016 (1)	$	33,453		$	47,819		$	81,272
Acquired in business combination	10,253			—			10,253
Goodwill impairment	(13,731		)	(21,476		)	(35,207		)
Balance at September 30, 2017	$	29,975		$	26,343		$	56,318

(1) Balances have been recasted due to the operating and reportable segments realignment.

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Intangible Assets

Intangible assets with determinable lives are amortized over their estimated useful lives. The Company's intangible assets consist primarily of developed technology, customer relationships and trade and brand names.

The following table reflects net intangible assets as of September 30, 2017 and October 1, 2016: 

	As of						Average estimated
(dollar amounts in thousands)	September 30, 2017			October 1, 2016			useful lives (in years)
Developed technology	$	74,080		$	74,080		7.0 to 15.0
Acquired in business combination	18,060			—
Accumulated amortization	(41,162		)	(37,969		)
Net developed technology	$	50,978		$	36,111
Customer relationships	$	36,968		$	36,968		5.0 to 6.0
Accumulated amortization	(27,398		)	(24,455		)
Net customer relationships	$	9,570		$	12,513
Trade and brand names	$	7,515		$	7,515		7.0 to 8.0
Accumulated amortization	(5,747		)	(5,329		)
Net trade and brand names	$	1,768		$	2,186
Other intangible assets	$	2,500		$	2,500		1.9
Accumulated amortization	(2,500		)	(2,500		)
Net wedge bonder other intangible assets	$	—		$	—
Net intangible assets	$	62,316		$	50,810

The following table reflects estimated annual amortization expense related to intangible assets as of September 30, 2017:

	As of
(in thousands)	September 30, 2017
Fiscal 2018	$	7,892
Fiscal 2019	7,892
Fiscal 2020	7,892
Fiscal 2021	5,684
Fiscal 2022 and thereafter	32,956
Total amortization expense	$	62,316

NOTE 6: CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS

Cash equivalents consist of instruments with remaining maturities of three months or less at the date of purchase. In general, these investments are free of trading restrictions. We carry these investments at fair value, based on quoted market prices or other readily available market information.

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KULICKE AND SOFFA INDUSTRIES, INC.

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Cash, cash equivalents, restricted cash and short-term investments consisted of the following as of September 30, 2017:

	As of
(dollar amounts in thousands)	September 30, 2017		October 1, 2016
Current assets:
Cash	$	65,759	$	118,335
Cash equivalents (1):
Money market funds	232,069		152,961
Time deposits (3)	89,087		133,611
Commercial paper	5,495		19,000
Total cash and cash equivalents	$	392,410	$	423,907
Restricted Cash (1)	$	530	$	—
Total restricted cash	$	530	$	—
Short-term investments (1):
Time deposits (3)	$	120,000	$	124,000
Deposits (2)	96,000		—
Total short-term investments	$	216,000	$	124,000
Total cash, cash equivalents, restricted cash and short-term investments	$	608,940	$	547,907

(1) Fair value approximates cost basis.

(2) Represents deposits that require a notice period of three months for withdrawal.

(3) Certain time deposits as at October 1, 2016 have been corrected from cash equivalents to short-term investments for comparative purposes.

NOTE 7: EQUITY INVESTMENTS

Equity investments consisted of the following as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017		October 1, 2016
Equity method investment	$	1,502	$	—

In March 2017, the Company made an investment in one of our strategic suppliers which provides the Company with the ability to exercise significant influence over the investment vehicle, in which it lacks controlling financial interest and is not a primary beneficiary. Our share of gains and losses in the equity method investment is recognized on a one-quarter lag, and is reflected as share of results of equity-method investee, net of tax, in the accompanying Consolidated Statements of Operations. During the fiscal year ended September 30, 2017, the Company recognized $0.2 million gain on equity investment.

NOTE 8: FAIR VALUE MEASUREMENTS

Accounting standards establish three levels of inputs that may be used to measure fair value: quoted prices in active markets for identical assets or liabilities (referred to as Level 1), inputs other than Level 1 that are observable for the asset or liability either directly or indirectly (referred to as Level 2) and unobservable inputs to the valuation methodology that are significant to the measurement of fair value of assets or liabilities (referred to as Level 3).

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

We measure certain financial assets and liabilities at fair value on a recurring basis. There were no transfers between fair value measurement levels during the year ended September 30, 2017.

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Fair Value Measurements on a Nonrecurring Basis

Our non-financial assets such as intangible assets and property, plant equipment are carried at cost unless impairment is deemed to have occurred.

Fair Value of Financial Instruments

Amounts reported as cash equivalents, short-term investments, accounts receivables, prepaid expenses and other current assets, accounts payable and accrued expenses approximate fair value.

NOTE 9: DERIVATIVE FINANCIAL INSTRUMENTS

The Company’s international operations are exposed to changes in foreign exchange rates due to transactions denominated in currencies other than U.S. dollars. Most of the Company’s revenue and cost of materials are transacted in U.S. dollars. However, a significant amount of the Company’s operating expenses are denominated in foreign currencies, primarily in Singapore.

The foreign currency exposure of our operating expenses are generally hedged with foreign exchange forward contracts. The Company’s foreign exchange risk management programs include using foreign exchange forward contracts with cash flow hedge accounting designation to hedge exposures to the variability in the U.S.-dollar equivalent of forecasted non-U.S. dollar-denominated operating expenses. These instruments generally mature within twelve months. For these derivatives, we report the after-tax gain or loss from the effective portion of the hedge as a component of accumulated other comprehensive income (loss), and we reclassify it into earnings in the same period or periods in which the hedged transaction affects earnings and in the same line item on the Consolidated Statements of Operations as the impact of the hedged transaction.

The fair value of derivative instruments on our Consolidated Balance Sheet as of September 30, 2017 and October 1, 2016 is as follows:

	As of
(in thousands)	September 30, 2017				October 1, 2016
	Notional Amount		Fair Value Asset Derivatives(1)		Notional Amount		Fair Value Liability Derivatives(2)
Derivatives designated as hedging instruments:
Foreign exchange forward contracts (2)	$	36,404	$	1,353	$	28,997	$	462
Total derivatives	$	36,404	$	1,353	$	28,997	$	462

(1) The fair value of derivative assets is measured using level 2 fair value inputs and is included in prepaid expenses and other current assets on our Consolidated Balance Sheet.

(2) The fair value of derivative liabilities is measured using level 2 fair value inputs and is included in accrued expenses and other current liabilities on our Consolidated Balance Sheet.

(3) Hedged amounts expected to be recognized to income within the next twelve months.

The effect of derivative instruments designated as cash flow hedges in our Consolidated Statements of Operations for the year ended September 30, 2017 and October 1, 2016 was as follows:

(in thousands)	Fiscal
	2017			2016
Foreign exchange forward contract in cash flow hedging relationships:
Net gain / (loss) recognized in OCI, net of tax(1)	$	669		$	(566	)
Net (loss) / gain reclassified from accumulated OCI into income, net of tax(2)	$	(1,146	)	$	(104	)
Net gain recognized in income(3)	$	—		$	—

(1) Net change in the fair value of the effective portion classified in other comprehensive income (“OCI”).

(2) Effective portion classified as selling, general and administrative expense.

(3) Ineffective portion and amount excluded from effectiveness testing classified in selling, general and administrative expense.

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NOTE 10: DEBT AND OTHER OBLIGATIONS

Financing Obligation

On December 1, 2013, Kulicke & Soffa Pte Ltd. (“Pte”), the Company's wholly owned subsidiary, signed a lease with DBS Trustee Limited as trustee of Mapletree Industrial Trust (the “Landlord”) to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of a building in Singapore as our corporate headquarters, as well as a manufacturing, technology, sales and service center (the “Building”). The lease has a 10 year non-cancellable term (the "Initial Term") and contains options to renew for 2 further 10 -year terms. The annual rent and service charge for the initial term range from $4 million to $5 million Singapore dollars.  

Pursuant to ASC No. 840, Leases ("ASC 840"), we have classified the Building on our balance sheet as Property, Plant and Equipment, which we are depreciating over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. At the inception of the lease, the asset and financing obligation recorded on the balance sheet was $20.0 million, which was based on an interest rate of 6.3% over the Initial Term. As of September 30, 2017, the financing obligation related to the Building is $16.8 million, which approximates fair value (Level 2). The financing obligation will be settled through a combination of periodic cash rental payments and the return of the leased property at the expiration of the lease. We do not report rent expense for the property, which is deemed owned for accounting purposes. Rather, rental payments required under the lease are considered debt service and applied to the deemed landlord financing obligation and interest expense. The Building and financing obligation are being amortized in a manner that will not generate a gain or loss upon lease termination.

Credit facilities and Bank Guarantees

On November 22, 2013, the Company obtained a $5.0 million credit facility with Citibank in connection with the issuance of bank guarantees for operational purposes. As of September 30, 2017, the outstanding amount is $3.2 million. In addition, the Company has other bank guarantees for operational purposes which are secured with corresponding deposits placed with the issuer banks. These amounts are shown as restricted cash in the Consolidated Balance Sheets.

On March 21, 2016, the Company entered into an Uncommitted Revolving Credit Agreement with United Overseas Bank Limited, New York Agency ("UOB"), providing for a $25 million revolving credit facility (the "2016 Credit Facility"). The 2016 Credit Facility is an unsecured revolving credit facility of $25 million with an initial term of one year, and has been extended on the same terms by another year until March 20, 2018. The proceeds of the 2016 Credit Facility may be used for the Company's general corporate purposes. As of September 30, 2017, there was no outstanding amount under the 2016 Credit Facility and we were in compliance with the covenants described in the 2016 Credit Facility.

NOTE 11: SHAREHOLDERS’ EQUITY AND EMPLOYEE BENEFIT PLANS

Common Stock and 401(k) Retirement Income Plans

The Company has a 401(k) retirement plan (the “Plan”) for eligible U.S. employees. The Plan allows for employee contributions and matching Company contributions from 4% to 6% based upon terms and conditions of the 401(k) Plan.

The following table reflects the Company’s contributions to the Plans during fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017		2016
Cash	$	1,645	$	1,544

Share Repurchase Program

On August 15, 2017, the Company announced that it fully executed its $100 million share repurchase program (the "Program"), originally announced on August 27, 2014. In addition, the Company announced that its Board of Directors approved a new share repurchase program (the "New Program") that authorizes the repurchase of up to $100 million of the Company’s common shares, from time to time over the three year period ending August 1, 2020. The Company may purchase shares of its common stock through open market and privately negotiated transactions at prices deemed appropriate by management. The Company has entered into a written trading plan under Rule 10b5-1 of the Exchange Act to facilitate repurchases under the New Program. The New Program is effective immediately, may be suspended or discontinued at any time and will be funded using the Company's available

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cash, cash equivalents and short-term investments. The timing and amount of repurchase transactions under the New Program depend on market conditions as well as corporate and regulatory considerations.

During the year ended September 30, 2017, the Company repurchased a total of 0.9 million shares of common stock at a cost of $18.2 million. The share repurchases were recorded in the periods they were delivered, and the payment of $18.2 million was accounted for as treasury stock in the Company’s Consolidated Balance Sheet. The Company records treasury stock purchases under the cost method using the first-in, first-out (FIFO) method. Upon reissuance of treasury stock, amounts in excess of the acquisition cost are credited to additional paid-in capital. If the Company reissues treasury stock at an amount below its acquisition cost and additional paid-in capital associated with prior treasury stock transactions is insufficient to cover the difference between acquisition cost and the reissue price, this difference is recorded against retained earnings. As of September 30, 2017, our remaining share repurchase authorization under the New Program was approximately $88.8 million.

Accumulated Other Comprehensive Income

The following table reflects accumulated other comprehensive (loss) / income reflected on the Consolidated Balance Sheets as of September 30, 2017 and October 1, 2016: 

	As of
(in thousands)	September 30, 2017			October 1, 2016
Gain from foreign currency translation adjustments	$	2,422		$	462
Unrecognized actuarial loss on pension plan, net of tax	(1,736		)	(2,726		)
Unrealized gain / (loss) on hedging	1,353			(462		)
Accumulated other comprehensive income/(loss)	$	2,039		$	(2,726	)

Equity-Based Compensation

The Company has stockholder-approved equity-based employee compensation plans (the “Employee Plans”) and director compensation plans (the “Director Plans”) (collectively, the “Equity Plans”). Under these Equity Plans, market-based share awards (collectively, “market-based restricted stock”), time-based share awards (collectively, “time-based restricted stock”), performance-based share awards (collectively, “performance-based restricted stock”), stock options, or common stock have been granted at 100% of the market price of the Company's common stock on the date of grant. As of September 30, 2017, 5.1 million shares of common stock are available for grant to its employees and directors under the 2017 Equity Plan, including previously registered shares that have been carried forward for issuance under the 2009 Equity Plan.

• Market-based restricted stock entitles the employee to receive common shares of the Company on the award vesting date if market performance objectives which measure relative total shareholder return (“TSR”) are attained. Relative TSR is calculated based upon the 90-calendar day average price of the Company's stock as compared to specific peer companies that comprise the GICS (45301020) Semiconductor Index. TSR is measured for the Company and each peer company over a performance period, which is generally three years. Vesting percentages range from 0% to 200% of awards granted. The provisions of the market-based restricted stock are reflected in the grant date fair value of the award; therefore, compensation expense is recognized regardless of whether the market condition is ultimately satisfied. Compensation expense is reversed if the award is forfeited prior to the vesting date.

• In general, stock options and time-based restricted stock awarded to employees vest annually over a three-year period provided the employee remains employed by the Company. The Company follows the non-substantive vesting method for stock options and recognizes compensation expense immediately for awards granted to retirement-eligible employees, or over the period from the grant date to the date retirement eligibility is achieved.

• In general, performance-based restricted stock (“PSU”) entitles the employee to receive common shares of the Company on the three-year anniversary of the grant date (if employed by the Company) if return on invested capital and revenue growth targets set by the Management Development and Compensation Committee (“MDCC”) of the Board of Directors on the date of grant are met. If return on invested capital and revenue growth targets are not met, performance-based restricted stock does not vest. Certain PSUs vest based on achievement of strategic goals over a certain time period or periods set by the MDCC. If the strategic goals are not achieved, the PSUs do not vest.

Equity-based compensation expense recognized in the Consolidated Statements of Operations for fiscal 2017, 2016, and 2015 was based upon awards ultimately expected to vest. In accordance with ASC No. 718, Stock Based Compensation, forfeitures have been estimated at the time of grant and were based upon historical experience. The Company reviews the forfeiture rates periodically and makes adjustments as necessary.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

The following table reflects total equity-based compensation expense, which includes restricted stock, stock options and common stock, included in the Consolidated Statements of Operations for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Cost of sales	$	463	$	421	$	393
Selling, general and administrative (1)	9,015		3,244		9,127
Research and development	2,244		2,065		2,469
Total equity-based compensation expense	$	11,722	$	5,730	$	11,989

(1) The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

The following table reflects equity-based compensation expense, by type of award, for fiscal 2017, 2016, and 2015:  

	Fiscal
(in thousands)	2017		2016			2015
Market-based restricted stock	$	3,480	$	(33	)	$	4,677
Time-based restricted stock	7,492		5,255			6,129
Performance-based restricted stock	—		(43		)	131
Stock options	—		—			3
Common stock	750		551			1,049
Total equity-based compensation expense (1)	$	11,722	$	5,730		$	11,989

(1) The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

Equity-Based Compensation: employee market-based restricted stock

The following table reflects employee market-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Market-based restricted stock outstanding as of September 27, 2014	1,068		$	5,271	1.0
Granted	232					$	16.83
Forfeited or expired	(48	)
Vested	(674	)
Market-based restricted stock outstanding as of October 3, 2015	578		$	4,465	1.4
Granted	172					$	12.26
Forfeited or expired	(256	)
Vested	(10	)
Market-based restricted stock outstanding as of October 1, 2016	484		$	2,924	1.0
Granted	388					$	13.47
Forfeited or expired	(3	)
Vested	(196	)
Market-based restricted stock outstanding as of September 30, 2017	673		$	6,204	1.4

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

The following table reflects the assumptions used to calculate compensation expense related to the Company’s market-based restricted stock issued during fiscal 2017, 2016, and 2015:

	Fiscal
	2017			2016			2015
Grant Price	$	12.51		$	9.58		$	14.02
Expected dividend yield	N/A			N/A			N/A
Expected stock price volatility	30.39		%	30.85		%	35.48		%
Risk-free interest rate	0.96		%	0.89		%	0.89		%

Equity-Based Compensation: employee time-based restricted stock

The following table reflects employee time-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Time-based restricted stock outstanding as of September 27, 2014	1,057		$	6,720	1.4
Granted	484					$	14.06
Forfeited or expired	(29	)
Vested	(663	)
Time-based restricted stock outstanding as of October 3, 2015	849		$	7,054	1.6
Granted	597					$	9.66
Forfeited or expired	(85	)
Vested	(346	)
Time-based restricted stock outstanding as of October 1, 2016	1,015		$	6,440	1.5
Granted	715					$	13.32
Forfeited or expired	(50	)
Vested	(600	)
Time-based restricted stock outstanding as of 30 September 2017	1,080		$	7,770	1.5

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Equity-Based Compensation: employee performance-based restricted stock

The following table reflects employee performance-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)
Performance-based restricted stock outstanding as of September 27, 2014	57		$	419	3.2
Granted	—
Performance-based restricted stock outstanding as of October 3, 2015	57		$	285	2.2
Granted	—
Forfeited or expired	(29	)
Vested	(28	)
Performance-based restricted stock outstanding as of October 1, 2016	—		—		0
Granted	—
Forfeited or expired	—
Vested	—
Performance-based restricted stock outstanding as of September 30, 2017	—		$	—	—

The following table reflects employee stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	220		$	8.14
Exercised	(45	)	$	8.58		$	282
Forfeited or expired	(28	)	$	7.25
Options outstanding as of October 3, 2015	147		$	8.18
Exercised	(53	)	$	5.40		$	330
Forfeited or expired	(4	)	$	9.00
Options outstanding as of October 1, 2016	90		$	8.41
Exercised	(61	)	$	8.31		$	531
Forfeited or expired	(13	)	$	8.50
Options outstanding as of September 30, 2017	16		$	8.73	0.3	$	200
Options vested and expected to vest as of September 30, 2017	16		$	8.73	0.3	$	200
Options exercisable as of September 30, 2017	16		$	8.73	0.3
In the money exercisable options as of September 30, 2017	16					$	200

Intrinsic value of stock options exercised is determined by calculating the difference between the market value of the Company's stock price at the time an option is exercised and the exercise price, multiplied by the number of shares. The intrinsic value of stock options outstanding and stock options exercisable is determined by calculating the difference between the Company's closing stock price on the last trading day of fiscal 2017 and the exercise price of in-the-money stock options, multiplied by the number of underlying shares. During fiscal 2017, the Company received $0.5 million in cash from the exercise of employee and non-employee director stock options.

As of September 30, 2017, there were no unvested employee stock options.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

The following table reflects outstanding and exercisable employee stock options as of September 30, 2017:

	Options Outstanding				Options Exercisable
Range of exercise prices	Options outstanding (in thousands)	Weighted average remaining contractual life (in years)	Weighted average exercise price		Options exercisable (in thousands)	Weighted average exercise price
8.64 - 8.74	16	0.3	$	8.73	16	$	8.73

Equity-Based Compensation: non-employee directors

The 2017 Equity Plan provides for the grant of common shares to each non-employee director upon initial election to the board and on the first business day of each calendar quarter while serving on the board. The grant to a non-employee director upon initial election to the board is that number of common shares closest in value to, without exceeding, $120,000.  The quarterly grant to a non-employee director upon the first business day of each calendar year quarter is that number of common shares closest in value to, without exceeding, $32,500.

The following table reflects shares of common stock issued to non-employee directors and the corresponding fair value for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Number of common shares issued	45		50		83
Fair value based upon market price at time of issue	$	750	$	551	$	1,049

The following table reflects non-employee director stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	55		$	10.22		$	225
Exercised	(30	)	$	10.19
Forfeited or expired	(5	)	$	6.48
Options outstanding as of October 3, 2015	20		$	11.20		$	225
Exercised	—		$	—
Forfeited or expired	(20	)	$	11.00
Options outstanding as of October 1, 2016	—		$	—	—	$	—
Exercised	—		$	—
Forfeited or expired	—		$	—
Options outstanding as of September 30, 2017	—		$	—	—	$	—
Options vested and expected to vest as of September 30, 2017	—		$	—	—	$	—
Options exercisable as of September 30, 2017	—		$	—	—
In the money exercisable options as of September 30, 2017	—					$	—

No non-employee director stock options were granted during fiscal 2017, 2016, and 2015.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

Pension Plan

The following table reflects the Company's defined benefits pension obligations as of September 30, 2017 and October 1, 2016:

		As of
(in thousands)		September 30, 2017		October 1, 2016
Switzerland pension obligation		$	1,951	$	2,393
Taiwan pension obligation		967		925
	Total pension obligation	$	2,918	$	3,318

Other Plans

Some of the Company's other foreign subsidiaries have retirement plans that are integrated with and supplement the benefits provided by laws of the various countries. These other plans are not required to report nor do they determine the actuarial present value of accumulated benefits or net assets available for plan benefits as they are defined contribution plans.

NOTE 12: EARNINGS PER SHARE

Basic income per share is calculated using the weighted average number of shares of common stock outstanding during the period. Stock options and restricted stock are included in the calculation of diluted earnings per share, except when their effect would be anti-dilutive.

The following tables reflect a reconciliation of the shares used in the basic and diluted net income per share computation for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands, except per share)	2017					2016				2015
	Basic		Diluted			Basic		Diluted		Basic		Diluted
NUMERATOR:
Net income	$	112,011	$	112,011		$	47,112	$	47,112	$	50,639	$	50,639
DENOMINATOR:
Weighted average shares outstanding - Basic	70,906		70,906			70,477		70,477		75,414		75,414
Stock options			19					32				70
Time-based restricted stock			592					274				175
Market-based restricted stock			546					58				—
Weighted average shares outstanding - Diluted			72,063					70,841				75,659
EPS:
Net income per share - Basic	$	1.58	$	1.58		$	0.67	$	0.67	$	0.67	$	0.67
Effect of dilutive shares			$	(0.03	)			$	—			$	—
Net income per share - Diluted			$	1.55				$	0.67			$	0.67

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

NOTE 13: INCOME TAXES

The following table reflects income or losses from continuing operations by location, the provision for income taxes and the effective tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(dollar amounts in thousands)	2017			2016			2015
United States operations	$	(4,114	)	$	(12,600	)	$	4,178
Foreign operations	107,800			67,350			33,527
Income from operations before tax	103,686			54,750			37,705
Income tax (benefit) / expenses	$	(8,135	)	$	7,638		$	(12,934	)
Effective tax rate	(7.8		)%	14.0		%	(34.3		)%

The following table reflects the provision for income taxes from continuing operations for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Current:
Federal	$	(3,975	)	$	871		$	1,459
State	64			53			76
Foreign	13,290			21,841			4,707
Deferred:
Federal	(15,374		)	(13,423		)	(20,250		)
State	40			12			(10		)
Foreign	(2,180		)	(1,716		)	1,084
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

The following table reflects the difference between the provision for income taxes and the amount computed by applying the statutory federal income tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Computed income tax expense based on U.S. statutory rate	$	36,290		$	19,163		$	13,197
Effect of earnings of foreign subsidiaries subject to different tax rates	(20,226		)	(7,330		)	(6,103		)
Benefits from foreign approved enterprise zones	(21,556		)	(8,531		)	(5,855		)
Benefits from research and development tax credits	(1,859		)	(2,839		)	(4,090		)
Benefits from foreign tax credits	(26,119		)	—			—
Change in permanent reinvestment assertion	—			(9,696		)	(19,704		)
Tax impact on restructuring	—			4,238			—
Tax audit settlement	—			4,889			—
Effect of permanent items	778			(2,274		)	1,822
Non-deductible goodwill impairment	8,805			—			—
Deferred taxes not benefited	6,458			3,585			2,634
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings)	6,039			4,981			4,904
Reserve for uncertain tax positions	2,936			208			886
State income tax expense (net of federal benefit)	60			996			(1,543		)
Other, net	259			248			918
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

During fiscal 2017, the Company elected to adopt the foreign tax credit for its U.S. federal tax return filings. As a result of this election, the Company has amended its U.S. tax returns from 2006 through 2015, filed its 2016 return on the same basis, and accrued the benefit for 2017.

In fiscal 2015, the Company implemented a restructuring plan to streamline its international operations and functions resulting in a change in its permanent reinvestment assertion outside the United States. In fiscal 2016, the Company continued to execute on the restructuring plan and approximately $9.7 million of deferred tax liability was reversed and recorded as a tax benefit due to the change in its permanent reinvestment assertion. As part of the plan, the Company also recorded restructuring related tax expense of approximately $4.2 million for transfers and exchanges of certain foreign subsidiaries in an effort to streamline its international operations and functions.

We consider the earnings of certain foreign subsidiaries to be permanently reinvested outside the United States. We have not recorded a deferred tax liability for U.S. federal income taxes of approximately $619.9 million of undistributed earnings. Determination of the amount of unrecognized deferred tax liability related to these earnings is not practicable, with the exception of certain foreign subsidiaries where we continue to retain a deferred tax liability for foreign withholding taxes of approximately $21.0 million, as those earnings may be distributed to its foreign parent company.

Undistributed earnings of approximately $0.5 million are not considered to be permanently reinvested outside the United States. As of September 30, 2017, the Company has provided a deferred tax liability of approximately $0.2 million for withholding taxes associated with future repatriation of earnings for certain subsidiaries to the United States.

The following table reflects the net deferred tax balance, composed of the tax effects of cumulative temporary differences for fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017			2016
Inventory reserves	$	589		$	546
Stock options	422			647
Other accruals and reserves	8,230			4,937
Domestic tax credit carryforwards	17,635			8,011
Net operating loss carryforwards	35,937			31,817
	$	62,813		$	45,958
Valuation allowance	$	(29,614	)	$	(27,381	)
Total long-term deferred tax asset	$	33,199		$	18,577
Foreign withholding tax on undistributed earnings	$	20,945		$	20,119
Fixed and intangible assets	11,262			9,333
Total long-term deferred tax liability	$	32,207		$	29,452
Total net deferred tax asset / (liability)	$	992		$	(10,875	)
Reported as
Deferred tax asset	$	27,771		$	16,822
Deferred tax liability	26,779			27,697
Total net deferred tax asset / (liability)	$	992		$	(10,875	)

As of September 30, 2017, the Company has foreign net operating loss carryforwards of $95.8 million, domestic state net operating loss carryforwards of $165.8 million, federal tax credit carryforwards of $24.3 million, and state tax credit carryforwards of $4.9 million that can reduce future taxable income. These carryforwards can be utilized in the future, prior to expiration of certain carryforwards in fiscal years 2017 through 2035 with the exception of certain credits and foreign net operating losses that have no expiration date. Pennsylvania tax law limits the time during which carryforwards may be applied against future taxes and also limits the utilization of domestic state net operating loss carryforwards to $5.0 million annually, but recent developments may change this amount in future years. The Company has recorded a valuation allowance against domestic state tax attributes and certain foreign tax attributes.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

The Company continues to evaluate the realizability of all of its net deferred tax assets at each reporting date and records a benefit for deferred tax assets to the extent it has projected future taxable income or deferred tax liabilities that provide a source of future income to benefit the deferred tax asset. As a result of this analysis, the Company continues to maintain a valuation allowance against a majority of its state deferred tax assets as the realization of these assets is not more likely than not given uncertainty of future apportioned earnings in these jurisdictions.

The beginning and ending balances of the Company's unrecognized tax benefits are reconciled below for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Unrecognized tax benefit, beginning of year	$	7,453		$	7,101		$	7,192
Additions for tax positions, current year	3,657			519			—
Additions for tax positions, prior year	1,834			827			5,140
Reductions for tax positions, prior year	(882		)	(994		)	(5,231		)
Unrecognized tax benefit, end of year	$	12,062		$	7,453		$	7,101

Approximately $11.2 million of the $12.1 million of unrecognized tax benefit as of September 30, 2017, if recognized, would impact the Company's effective tax rate.

The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense.

The Company's future effective tax rate would be affected if earnings were lower than anticipated in countries where it is subjected to lower statutory rates and higher than anticipated in countries where it is subjected to higher statutory rates, by changes in the valuation of its deferred tax assets and liabilities, or by changes in tax laws, regulations, accounting principles, or interpretations thereof. In addition, changes in assertion for foreign earnings permanently or non-permanently reinvested as a result of changes in facts and circumstances could significantly impact the effective tax rate. The Company regularly assesses the effects resulting from these factors to determine the adequacy of its provision for income taxes.

It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain unrecognized tax positions will increase or decrease during the next 12 months due to the expected lapse of statutes of limitation and/ or settlements of tax examinations. We cannot practicably estimate the financial outcomes of these examinations.

The Company files U.S. federal income tax return, as well as income tax returns in various state and foreign jurisdictions. The U.S. Internal Revenue Service is currently examining the fiscal years 2006 and 2015, and all years prior to fiscal 2006 are closed. For most state tax returns, tax years following fiscal 2001 remain subject to examination as a result of the generation of net operating loss carry-forwards. In the foreign jurisdictions where the Company files income tax returns, the statutes of limitations with respect to these jurisdictions vary from jurisdiction to jurisdiction and range from 4 to 6 years. The Company is currently under income tax examination by tax authorities in certain foreign jurisdictions. The Company believes that adequate provisions have been made for any adjustments that may result from tax examinations.

As a result of committing to certain capital investments and employment levels, income from operations in Singapore and Malaysia is subject to reduced tax rates. In connection with Singapore operations, the Company has been granted a decreased effective tax rate of five percent in that jurisdiction until February 1, 2020 subject to the fulfillment of certain continuing conditions. In fiscal 2017, 2016, and 2015, the preferential rate reduced income tax expense by approximately $21.6 million or $0.30 per share, $8.5 million or $0.12 per share and $5.9 million or $0.08 per share, respectively.

NOTE 14: OTHER FINANCIAL DATA

The following table reflects other financial data for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Incentive compensation expense	$	29,612	$	14,661	$	10,768
Rent expense	$	5,071	$	5,901	$	5,006
Warranty and retrofit expense	$	12,219	$	4,599	$	2,808

72

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

NOTE 15: SEGMENT INFORMATION

Reportable segments are defined as components of an enterprise that engage in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and to assess performance. The Company's Chief Executive Officer is the Company's chief operating decision maker. The chief operating decision-maker does not review discrete asset information.

During the fourth quarter of fiscal 2017, we reorganized our reporting structure into two reportable segments consisting of: (i) Capital Equipment; and (ii) APS. As a result of this re-alignment, the Company has aggregated twelve operating segments as of September 30, 2017, with six operating segments within the Capital Equipment reportable segment and six operating segments in the APS reportable segment. Subsequently, we have recasted financial results for fiscal years 2017, 2016 and 2015 based on the revised segment structure. The change in the segments was a result of changes to our organizational structure initiated during the fourth quarter of fiscal 2017 to streamline business operations to improve profitability and competitiveness and reflects a change in the manner in which our chief operating decision maker reviews information to assess our performance and make decisions about resource allocation. As part of these actions, we transitioned to a new internal management structure whereby the operating management responsible for tools used to assemble semiconductor devices, including integrated circuits (“ICs”), high and low powered discrete devices, light-emitting diodes (“LEDs”) and power modules, services, spares, maintenance, repair and upgrading operating segments was brought under common leadership in the APS segment. The restructuring actions were completed during the fourth quarter of fiscal year 2017. Subsequent to the reorganization, the Capital Equipment segment comprises of the manufacturing and selling of ball bonders, wafer level bonders, wedge bonders, advanced packaging and electronic assembly solutions to semiconductor device manufacturers, IDMs, OSATs, other electronics manufacturers and automotive electronics suppliers. Our prior period reportable segment information has been recasted to reflect the current segment structure and conform to the current period presentation.

The following table reflects operating information by segment for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Net revenue:
Capital Equipment	$	651,934	$	488,925	$	411,099
APS	157,107		138,267		125,372
Net revenue	809,041		627,192		536,471
Income from operations:
Capital Equipment(1)	92,286		32,070		11,114
APS(2)	5,968		20,469		26,137
Income from operations	$	98,254	$	52,539	$	37,251

(1) Includes the restructuring expenses as discussed in Note 2, of $2.4 million, $6.2 million and $1.5 million for the years ended 2017, 2016 and 2015 respectively.

(2) Includes the restructuring expenses as discussed in Note 2, of $0.9 million, $2.4 million and $0.4 million for the years ended 2017, 2016 and 2015 respectively

The following tables reflect capital expenditures ,depreciation and amortization expense by segment for fiscal 2017, 2016 and 2015.

	Fiscal
(in thousands)	2017		2016		2015
Capital expenditures:
Capital Equipment	$	14,415	$	3,111	$	6,592
APS	11,273		3,190		2,927
Capital expenditures	$	25,688	$	6,301	$	9,519

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

	Fiscal
(in thousands)	2017		2016		2015
Depreciation expense:
Capital Equipment	$	6,306	$	6,012	$	6,075
APS	3,397		3,557		3,014
Depreciation expense	$	9,703	$	9,569	$	9,089

	Fiscal
(in thousands)	2017		2016		2015
Amortization expense:
Capital Equipment	$	2,841	$	2,760	$	4,291
APS	3,713		3,901		5,592
Amortization expense	$	6,554	$	6,661	$	9,883

Geographical information

The following tables reflect destination sales to unaffiliated customers by country and long-lived assets by country for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
China	$	323,803	$	211,448	$	169,557
Taiwan	100,738		129,128		56,610
Korea	73,410		70,593		40,687
Malaysia	72,329		42,368		48,825
United States	57,728		47,806		47,220
Philippines	25,165		8,272		42,575
Japan	21,224		28,256		31,413
All other	134,644		89,321		99,584
Total destination sales to unaffiliated customers	$	809,041	$	627,192	$	536,471

	Fiscal
(in thousands)	2017		2016		2015
Long-lived assets:
United States	$	43,440	$	18,570	$	7,429
Singapore	31,553		33,286		36,754
China	11,148		7,459		7,386
Israel	4,549		4,810		3,701
All other	6,899		5,295		3,084
Total long-lived assets	$	97,589	$	69,420	$	58,354

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

NOTE 16: COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS

Warranty Expense

The Company's equipment is generally shipped with a one-year warranty against manufacturing defects. The Company establishes reserves for estimated warranty expense when revenue for the related equipment is recognized. The reserve for estimated warranty expense is based upon historical experience and management's estimate of future warranty costs.

The following table reflects the reserve for product warranty activity for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017			2016			2015
Reserve for product warranty, beginning of period	$	4,138		$	1,856		$	1,542
Addition from business combination	—			—			547
Provision for product warranty	10,404			4,816			2,614
Product warranty costs paid	(2,709		)	(2,534		)	(2,847		)
Reserve for product warranty, end of period	$	11,833		$	4,138		$	1,856

Other Commitments and Contingencies

The following table reflects obligations not reflected on the Consolidated Balance Sheet as of September 30, 2017:

			Payments due by fiscal year
(in thousands)	Total		2018		2019		2020		2021		thereafter
Inventory purchase obligation (1)	$	106,084	$	106,084	$	—	$	—	$	—	$	—
Operating lease obligations (2)	19,958		3,781		2,879		2,556		1,841		8,901
Total	$	126,042	$	109,865	$	2,879	$	2,556	$	1,841	$	8,901

(1) The Company orders inventory components in the normal course of its business. A portion of these orders are non-cancelable and a portion may have varying penalties and charges in the event of cancellation.

(2) The Company has minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by the Company) primarily for various facility and equipment leases, which expire periodically through 2018 (not including lease extension options, if applicable).

Pursuant to ASC No. 840, Leases, for lessee's involvement in asset construction, the Company was considered the owner of the Building during the construction phase. The Building was completed on December 1, 2013 and Pte signed an agreement with the Landlord to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of the Building. Following the completion of construction, we performed a sale-leaseback analysis pursuant to ASC 840-40 and determined that because of our continuing involvement, ASC 840-40 precluded us from derecognizing the asset and associated financing obligation. As such, we reclassified the asset from construction in progress to Property, Plant and Equipment and began to depreciate the building over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. As of September 30, 2017, we recorded a financing obligation related to the Building of $16.8 million (see Note 10 above). The financing obligation is not reflected in the table above.

Concentrations

The following tables reflect significant customer concentrations as a percentage of net revenue for fiscal 2017, 2016, and 2015:

	Fiscal
	2017		2016		2015
Haoseng Industrial Co., Ltd	10.1	%	11.5	%	*

 * Represents less than 10% of net revenue

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

The following table reflects significant customer concentrations as a percentage of total accounts receivable as of September 30, 2017 and October 1, 2016:

	As of
	September 30, 2017		October 1, 2016
Haoseng Industrial Co., Ltd	26.2	%	20.8	%

NOTE 17: SELECTED QUARTERLY FINANCIAL DATA (unaudited)

The following table reflects selected quarterly financial data for fiscal 2017 and 2016:

	Fiscal 2017 for the Quarter Ended
(in thousands, except per share amounts)	December 31			April 1		July 1			September 30			Fiscal 2017
Net revenue	$	149,639		$	199,613	$	243,897		$	215,892		$	809,041
Gross profit	68,318			90,291		111,698			104,739			375,046
Income from operations	17,281			32,605		11,464			36,904			98,254
Income tax expense / (benefit)	2,608			4,882		(17,867		)	2,242			(8,135		)
Net income	$	15,583		$	29,041	$	30,811		$	36,576		$	112,011
Net income per share (1):
Basic	$	0.22		$	0.41	$	0.43		$	0.52		$	1.58
Diluted	$	0.22		$	0.40	$	0.43		$	0.51		$	1.55
Weighted average shares outstanding:
Basic	70,854			70,964		71,063			70,742			70,906
Diluted	71,763			72,270		72,483			72,071			72,063
	Fiscal 2016 for the Quarter Ended
(in thousands, except per share amounts)	January 2			April 2		July 2			October 1			Fiscal 2016
Net revenue	$	108,534		$	156,400	$	216,414		$	145,844		$	627,192
Gross profit	50,421			69,647		100,040			66,621			286,729
Income from operations	(1,705		)	11,709		38,622			3,913			52,539
Income tax (benefit) / expense	(1,265		)	7,045		7,519			(5,661		)	7,638
Net income	$	(91	)	$	5,089	$	31,785		$	10,329		$	47,112
Net income per share (1):
Basic	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Diluted	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Weighted average shares outstanding:
Basic	70,738			70,389		70,379			70,404			70,477
Diluted	70,738			70,634		70,843			71,017			70,841

(1) EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

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KULICKE AND SOFFA INDUSTRIES, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

NOTE 18: SUBSEQUENT EVENTS

On October 12, 2017, the Company entered into foreign exchange forward contracts with notional amounts of $12.7 million. We entered into these foreign exchange forward contracts to hedge a portion of our forecasted foreign currency-denominated expenses in the normal course of business and, accordingly, they are not speculative in nature. These foreign exchange forward contracts have maturities of up to twelve months.

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Item 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

Item 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2017. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that, as of September 30, 2017 our disclosure controls and procedures were effective in providing reasonable assurance that the information required to be disclosed by us in reports filed under the Securities Exchange Act of 1934, as amended, is (i) recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms and (ii) accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding disclosure.

Management's Report on Internal Control Over Financial Reporting

The management of Kulicke and Soffa Industries, Inc. (the “Company”) is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a-15(f) and 15(d)-15(f) of the Securities Exchange Act of 1934, as amended. The Company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

The Company's internal control over financial reporting includes those policies and procedures that pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles; provide reasonable assurance that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management evaluated the Company's internal control over financial reporting as of September 30, 2017. In making this assessment, management used the framework established in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Management's assessment included an evaluation of the design of our internal control over financial reporting and testing of the operational effectiveness of our internal control over financial reporting. Management reviewed the results of its assessment with the Audit Committee of the Company's Board of Directors.

Management's evaluation of internal control over financial reporting as of September 30, 2017 has excluded the evaluation of the effectiveness of internal control over financial reporting related to Liteq B.V ("Liteq") because it was acquired in a business combination during the year ended September 30, 2017. As of September 30, 2017, Liteq represented approximately 2.5% of our consolidated assets. No revenue was contributed by Liteq for the year ended September 30, 2017. See Note 4 of our Notes to Consolidated Financial Statements for more information.

Based on that assessment and based on the criteria in the COSO framework, management has concluded that, as of September 30, 2017, the Company's internal control over financial reporting was effective.

The effectiveness of the Company's internal control over financial reporting as of September 30, 2017 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in its report, which appears herein.

Changes in internal control over financial reporting

In connection with the evaluation by our management, including with the participation of our Chief Executive Officer and Chief Financial Officer, of our internal control over financial reporting, no changes during the three months ended September 30, 2017 were identified to have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Item 9B. OTHER INFORMATION

None.

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PART III

Item 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information required by Item 401 of Regulation S-K with respect to the directors and executive officers will appear under the heading “ITEM 1 - ELECTION OF DIRECTORS” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference. The other information required by Item 401 of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Item 405 of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE - Section 16(a) Beneficial Ownership Reporting Compliance” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Item 406 of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE - Code of Ethics” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Item 407(c)(3) of Regulation will appear under the headings “CORPORATE GOVERNANCE-Nominating and Governance Committee” and “Shareholder Proposals” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Items 407(d)(4) and (d)(5) of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE-Audit Committee” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

Item 11.EXECUTIVE COMPENSATION

The information required by Item 402 of Regulation S-K will appear under the heading “COMPENSATION OF EXECUTIVE OFFICERS,” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Item 407(e)(4) of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE-Management Development and Compensation Committee Interlocks and Insider Participation” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Item 407(e)(5) of Regulation S-K will appear under the heading “MANAGEMENT DEVELOPMENT AND COMPENSATION COMMITTEE REPORT” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

Item 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required hereunder concerning security ownership of certain beneficial owners and management will appear under the headings “CORPORATE GOVERNANCE - Security Ownership Of Certain Beneficial Owners” and “CORPORATE GOVERNANCE - SECURITY OWNERSHIP OF DIRECTORS, NOMINEES AND EXECUTIVE OFFICERS”, in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference. The information required by this item relating to securities authorized for issuance under equity compensation plans is included under the heading “EQUITY COMPENSATION PLAN INFORMATION” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which is incorporated herein by reference.

Item 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The information required by Item 404 of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE - Certain Relationships and Related Transactions” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

The information required by Section 407(a) of Regulation S-K will appear under the heading “CORPORATE GOVERNANCE - Board Matters” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

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Item 14.PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required hereunder will appear under the heading “AUDIT AND RELATED FEES” in the Company's Proxy Statement for the 2018 Annual Meeting of Shareholders, which information is incorporated herein by reference.

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Part IV

Item 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) The following documents are filed as part of this report:

		Page
(1)	Financial Statements - Kulicke and Soffa Industries, Inc.:
	Report of Independent Registered Public Accounting Firm	41
	Consolidated Balance Sheets as of September 30, 2017 and October 1, 2016	42
	Consolidated Statements of Operations for fiscal 2017, 2016 and 2015	43
	Consolidated Statements of Comprehensive Income for fiscal 2017, 2016 and 2015	44
	Consolidated Statements of Changes in Shareholders' Equity for fiscal 2017, 2016 and 2015	45
	Consolidated Statements of Cash Flows for fiscal 2017, 2016 and 2015	46
	Notes to Consolidated Financial Statements	47
(2)	Financial Statements and Schedules:
	Schedule II - Valuation and Qualifying Accounts	85
	All other schedules are omitted because they are not applicable or the required information is shown in the Consolidated Financial Statements or notes thereto.
(3)	Exhibits:

EXHIBIT NUMBER	ITEM
3.1	The Company's Amended and Restated Articles of Incorporation, dated December 5, 2007, is incorporated herein by reference to Exhibit 3(i) to the Company's Annual Report on Form 10-K for the fiscal year ended September 29, 2007, SEC file number 000-00121.
3.2	The Company's Amended and Restated By-Laws, dated October 22, 2015, is incorporated herein by reference to Exhibit 3(ii) to the Company's Current Report on Form 8-K dated October 22, 2015.
4.1	Specimen Common Share Certificate of Kulicke and Soffa Industries Inc., is incorporated herein by reference to Exhibit 4 to the Company's Form-8A12G/A dated September 11, 1995, SEC file number 000-00121.
10.1	2004 Israeli Addendum to 1998 Employee Incentive Stock Option and Non-Qualified Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(vii) to the Company's Post-Effective Amendment No.4 on Form S-1 to the Registration Statement on Form S-3 filed on December 14, 2004, SEC file number 333-111478.*
10.2	Form of Nonqualified Stock Option Agreement regarding the 1998 Employee Incentive Stock Option and Non-Qualified Stock Option Plan, is incorporated herein by reference to Exhibit 99.1 to the Company's Current Report on Form 8-K dated October 8, 2008, SEC file number 000-00121.*
10.3	Form of Incentive Stock Option Agreement regarding the Employee Incentive Stock Option and Non-Qualified Stock Option Plan, is incorporated herein by reference to Exhibit 99.2 to the Company's Current Report on Form 8-K dated October 8, 2008, SEC file number 000-00121.*
10.4	1999 Nonqualified Employee Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(xv) to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2003, SEC file number 000-00121.*
10.5	2004 Israeli Addendum to the 1999 Non-Qualified Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(ix) to the Company's Post-Effective Amendment No.4 on Form S-1 to the Registration Statement on Form S-3 filed on December 14, 2004, SEC file number 333-111478.*
10.6	Officer Incentive Compensation Plan, dated August 2, 2005, is incorporated herein by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2005, SEC file number 000-00121.*
10.7	2009 Equity Plan is incorporated herein by reference to Appendix A to the Company's Proxy Statement on Schedule 14A for the annual meeting of shareholders on February 10, 2009.*

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10.8	Amendment No. 1 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 15, 2009, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on September 18, 2009.*
10.9	Amendment No. 2 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 30, 2009, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on September 18, 2009.*
10.10	Amendment No. 3 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 21, 2012, in incorporated herein by reference to Exhibit 10.4 of the Company's Current Report on Form 8-K filed on December 7, 2012.*
10.11	Form of Officer Restricted Share Unit Award Agreement regarding the 2009 Equity Plan, is incorporated herein by reference to Exhibit 10.5 to the Company's Current Report on Form 8-K dated December 9, 2010.*
10.12	Form of Officer Restricted Share Unit Award Agreement regarding the 2009 Equity Plan, is incorporated herein by reference to Exhibit 10.5 to the Company's Current Report on Form 8-K dated December 7, 2012.*
10.13	Kulicke & Soffa Industries, Inc. Executive Severance Pay Plan, dated as of August 9, 2011, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on August 12, 2011.*
10.14	Kulicke & Soffa Industries, Inc. Officer Severance Pay Plan, dated as of August 9, 2011, is incorporated herein by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on August 12, 2011.*
10.15	Form of Change of Control Agreement, dated as of March 25, 2009, is incorporated herein by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on March 31, 2009.*
10.16	Form of Change of Control Agreement, is incorporated herein by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on August 12, 2011.*
10.17	Offer Letter between the Company and Bruno Guilmart dated August 6, 2010, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K dated August 6, 2010.*
10.18	Offer Letter between the Company and Jonathan H. Chou, dated November 16, 2010, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K dated November 16, 2010.*
10.19	Form of Officer Strategic Performance Share Unit Award Agreement regarding the 2009 Equity Plan is incorporated herein by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 29, 2012.*
10.20	Form of Director Indemnification Agreement is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on October 10, 2013.*
10.21	Lease Agreement between DBS Trustee Limited, as trustee of Mapletree Industrial Trust, and the Kulicke & Soffa Pte. Ltd, dated December 1, 2013, is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 5, 2013.
10.22	Lease Agreement Variation Letter between DBS Trustee Limited, as trustee of Mapletree Industrial Trust, and the Kulicke & Soffa Pte. Ltd, dated December 1, 2013, is incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on December 5, 2013.
10.23	Form of Officer Indemnification Agreement is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 11, 2013.*
10.24	Amended and Restated Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on May 8, 2014.*
10.25	Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on September 18, 2014.*
10.26	Share Sale and Purchase Agreement between Kulicke & Soffa Holdings, B.V. and Assembléon Holding B.V., dated December 29, 2014, incorporated herein by reference to Exhibit 10.1 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.
10.27	Offer Letter between the Company and Deepak Sood, dated October 25, 2012, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*

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10.28	Offer Letter between the Company and Yih Neng Lee, dated June 21, 2013, incorporated herein by reference to Exhibit 10.3 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*
10.29	Offer Letter between the Company and Irene Lee, dated January 28, 2014, incorporated herein by reference to Exhibit 10.4 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*
10.30	Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on September 25, 2015.*
10.31	Kulicke & Soffa Industries, Inc. 2009 Equity Plan Restricted Share Unit Award Agreement, incorporated herein by reference to Exhibit 10.35 of the Company's Annual Report on Form 10-K for the year ended October 1, 2015.*
10.32	Letter Agreement between the Company and Bruno Guilmart, dated December 3, 2015, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended January 2, 2016.*
10.33	Offer Letter between Kulicke and Soffa Industries, Inc. and Fusen Chen dated October 3, 2016, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on October 3, 2016.*
10.34	Agreement For Purchase and Sale of Real Property, dated January 11, 2017, between the Company and ARC KSFTWPA001, LLC, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
10.35	2017 Equity Plan is incorporated herein by reference to Appendix A to the Company's Proxy Statement on Schedule 14A for the annual meeting of shareholders on March 14, 2017.*
21	Subsidiaries of the Company.
23	Consent of PricewaterhouseCoopers LLP (Independent Registered Public Accounting Firm).
31.1	Certification of Fusen Chen, Chief Executive Officer of Kulicke and Soffa Industries, Inc., pursuant to Rule 13a-14(a) or Rule 15d-14(a).
31.2	Certification of Jonathan Chou, Chief Financial Officer of Kulicke and Soffa Industries, Inc., pursuant to Rule 13a-14(a) or Rule 15d-14(a).
32.1	Certification of Fusen Chen, Chief Executive Officer of Kulicke and Soffa Industries, Inc., pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Jonathan Chou, Chief Financial Officer of Kulicke and Soffa Industries, Inc., pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
* Indicates a management contract or compensatory plan or arrangement ** Copies of certain instruments defining the rights of holders of certain of our long-term debt are not filed herewith. We hereby agree to furnish a copy of any such instrument to the SEC upon request.

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KULICKE AND SOFFA INDUSTRIES, INC.

Schedule II-Valuation and Qualifying Accounts

Fiscal 2017:		Beginning of period		Charged to Costs and Expenses				Other Additions		Other Deductions				End of period
Allowance for doubtful accounts		$	506	$	(136	)		$	—	$	(291	)	(1)	$	79
Inventory reserve		$	21,080	$	10,925			$	—	$	(7,366	)	(2)	$	24,639
Valuation allowance for deferred taxes		$	27,381	$	—		(3)	$	2,233	$	—			$	29,614
Fiscal 2016:
Allowance for doubtful accounts		$	621	$	(115	)		$	—	$	—		(1)	$	506
Inventory reserve		$	19,073	$	6,676			$	—	$	(4,669	)	(2)	$	21,080
Valuation allowance for deferred taxes		$	23,128	$	563		(3)	$	3,690	$	—			$	27,381
Fiscal 2015:
Allowance for doubtful accounts		$	143	$	478			$	—	$	—		(1)	$	621
Inventory reserve		$	13,863	$	3,978			$	7,696	$	(6,464	)	(2)	$	19,073
Valuation allowance for deferred taxes		$	24,624	$	—		(3)	$	—	$	(1,496	)		$	23,128
(1)	Represents write-offs of specific accounts receivable.
(2)	Sale or scrap of previously reserved inventory.
(3)	Reflects increase/decrease in the valuation allowance primarily associated with the Company's U.S. and foreign net operating losses and other deferred tax assets.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	KULICKE AND SOFFA INDUSTRIES, INC.
By:	/s/ FUSEN CHEN
	Fusen Chen
	President and Chief Executive Officer
Dated:	November 16, 2017

Signature	Title	Date
/s/ FUSEN CHEN	President and Chief Executive Officer	November 16, 2017
Fusen Chen	(principal executive officer)
/s/ JONATHAN CHOU	Executive Vice President and Chief Financial Officer	November 16, 2017
Jonathan Chou	(principal financial officer and principal accounting officer)
/s/ GARRETT E. PIERCE	Director	November 16, 2017
Garrett E. Pierce
/s/ BRIAN R. BACHMAN	Director	November 16, 2017
Brian R. Bachman
/s/ CHIN HU LIM	Director	November 16, 2017
Chin Hu Lim
/s/ GREGORY F. MILZCIK	Director	November 16, 2017
Gregory F. Milzcik
/s/ MUI SUNG YEO	Director	November 16, 2017
Mui Sung Yeo
/s/ PETER T. KONG	Director	November 16, 2017
Peter T. Kong

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EXHIBIT INDEX

EXHIBIT NUMBER	ITEM
3.1	The Company's Amended and Restated Articles of Incorporation, dated December 5, 2007, is incorporated herein by reference to Exhibit 3(i) to the Company's Annual Report on Form 10-K for the fiscal year ended September 29, 2007, SEC file number 000-00121.
3.2	The Company's Amended and Restated By-Laws, dated October 22, 2015, is incorporated herein by reference to Exhibit 3(ii) to the Company's Current Report on Form 8-K dated October 22, 2015.
4.1	Specimen Common Share Certificate of Kulicke and Soffa Industries Inc., is incorporated herein by reference to Exhibit 4 to the Company's Form-8A12G/A dated September 11, 1995, SEC file number 000-00121.
10.1	2004 Israeli Addendum to 1998 Employee Incentive Stock Option and Non-Qualified Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(vii) to the Company's Post-Effective Amendment No.4 on Form S-1 to the Registration Statement on Form S-3 filed on December 14, 2004, SEC file number 333-111478.*
10.2	Form of Nonqualified Stock Option Agreement regarding the 1998 Employee Incentive Stock Option and Non-Qualified Stock Option Plan, is incorporated herein by reference to Exhibit 99.1 to the Company's Current Report on Form 8-K dated October 8, 2008, SEC file number 000-00121.*
10.3	Form of Incentive Stock Option Agreement regarding the Employee Incentive Stock Option and Non-Qualified Stock Option Plan, is incorporated herein by reference to Exhibit 99.2 to the Company's Current Report on Form 8-K dated October 8, 2008, SEC file number 000-00121.*
10.4	1999 Nonqualified Employee Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(xv) to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2003, SEC file number 000-00121.*
10.5	2004 Israeli Addendum to the 1999 Non-Qualified Stock Option Plan (as amended and restated effective March 21, 2003), is incorporated herein by reference to Exhibit 10(ix) to the Company's Post-Effective Amendment No.4 on Form S-1 to the Registration Statement on Form S-3 filed on December 14, 2004, SEC file number 333-111478.*
10.6	Officer Incentive Compensation Plan, dated August 2, 2005, is incorporated herein by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2005, SEC file number 000-00121.*
10.7	2009 Equity Plan is incorporated herein by reference to Appendix A to the Company's Proxy Statement on Schedule 14A for the annual meeting of shareholders on February 10, 2009.*
10.8	Amendment No. 1 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 15, 2009, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on September 18, 2009.*
10.9	Amendment No. 2 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 30, 2009, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on September 18, 2009.*
10.10	Amendment No. 3 to the Kulicke and Soffa Industries, Inc. 2009 Equity Plan, effective September 21, 2012, in incorporated herein by reference to Exhibit 10.4 of the Company's Current Report on Form 8-K filed on December 7, 2012.*
10.11	Form of Officer Restricted Share Unit Award Agreement regarding the 2009 Equity Plan, is incorporated herein by reference to Exhibit 10.5 to the Company's Current Report on Form 8-K dated December 9, 2010.*
10.12	Form of Officer Restricted Share Unit Award Agreement regarding the 2009 Equity Plan, is incorporated herein by reference to Exhibit 10.5 to the Company's Current Report on Form 8-K dated December 7, 2012.*
10.13	Kulicke & Soffa Industries, Inc. Executive Severance Pay Plan, dated as of August 9, 2011, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on August 12, 2011.*
10.14	Kulicke & Soffa Industries, Inc. Officer Severance Pay Plan, dated as of August 9, 2011, is incorporated herein by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on August 12, 2011.*

87

Table of Contents

10.15	Form of Change of Control Agreement, dated as of March 25, 2009, is incorporated herein by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on March 31, 2009.*
10.16	Form of Change of Control Agreement, is incorporated herein by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on August 12, 2011.*
10.17	Offer Letter between the Company and Bruno Guilmart dated August 6, 2010, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K dated August 6, 2010.*
10.18	Offer Letter between the Company and Jonathan H. Chou, dated November 16, 2010, is incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K dated November 16, 2010.*
10.19	Form of Officer Strategic Performance Share Unit Award Agreement regarding the 2009 Equity Plan is incorporated herein by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 29, 2012.*
10.20	Form of Director Indemnification Agreement is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on October 10, 2013.*
10.21	Lease Agreement between DBS Trustee Limited, as trustee of Mapletree Industrial Trust, and the Kulicke & Soffa Pte. Ltd, dated December 1, 2013, is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 5, 2013.
10.22	Lease Agreement Variation Letter between DBS Trustee Limited, as trustee of Mapletree Industrial Trust, and the Kulicke & Soffa Pte. Ltd, dated December 1, 2013, is incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on December 5, 2013.
10.23	Form of Officer Indemnification Agreement is incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 11, 2013.*
10.24	Amended and Restated Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on May 8, 2014.*
10.25	Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on September 18, 2014.*
10.26	Share Sale and Purchase Agreement between Kulicke & Soffa Holdings, B.V. and Assembléon Holding B.V., dated December 29, 2014, incorporated herein by reference to Exhibit 10.1 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.
10.27	Offer Letter between the Company and Deepak Sood, dated October 25, 2012, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*
10.28	Offer Letter between the Company and Yih Neng Lee, dated June 21, 2013, incorporated herein by reference to Exhibit 10.3 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*
10.29	Offer Letter between the Company and Irene Lee, dated January 28, 2014, incorporated herein by reference to Exhibit 10.4 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 27, 2014.*
10.30	Incentive Compensation Plan, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on September 25, 2015.*
10.31	Kulicke & Soffa Industries, Inc. 2009 Equity Plan Restricted Share Unit Award Agreement, incorporated herein by reference to Exhibit 10.35 of the Company's Annual Report on Form 10-K for the year ended October 1, 2015.*
10.32	Letter Agreement between the Company and Bruno Guilmart, dated December 3, 2015, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended January 2, 2016.*
10.33	Offer Letter between Kulicke and Soffa Industries, Inc. and Fusen Chen dated October 3, 2016, incorporated herein by reference to Exhibit 10.1 of the Company's Current Report on Form 8-K filed on October 3, 2016.*
10.34	Agreement For Purchase and Sale of Real Property, dated January 11, 2017, between the Company and ARC KSFTWPA001, LLC, incorporated herein by reference to Exhibit 10.2 of the Company's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
10.35	2017 Equity Plan is incorporated herein by reference to Appendix A to the Company's Proxy Statement on Schedule 14A for the annual meeting of shareholders on March 14, 2017.*
21	Subsidiaries of the Company.
23	Consent of PricewaterhouseCoopers LLP (Independent Registered Public Accounting Firm).

88

Table of Contents

31.1	Certification of Fusen Chen, Chief Executive Officer of Kulicke and Soffa Industries, Inc., pursuant to Rule 13a-14(a) or Rule 15d-14(a).
31.2	Certification of Jonathan Chou, Chief Financial Officer of Kulicke and Soffa Industries, Inc., pursuant to Rule 13a-14(a) or Rule 15d-14(a).
32.1	Certification of Fusen Chen, Chief Executive Officer of Kulicke and Soffa Industries, Inc., pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Jonathan Chou, Chief Financial Officer of Kulicke and Soffa Industries, Inc., pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
* Indicates a management contract or compensatory plan or arrangement ** Copies of certain instruments defining the rights of holders of certain of our long-term debt are not filed herewith. We hereby agree to furnish a copy of any such instrument to the SEC upon request.

89

EX-21

EXHIBIT 21

SUBSIDIARIES OF THE COMPANY (1)

Name	Jurisdiction of Incorporation
Alphasem Asia Limited	Hong Kong
Assembléon B.V.	The Netherlands
K&S Worldwide, Inc.	Delaware
Kulicke & Soffa (Asia) Limited	Hong Kong
Kulicke & Soffa (Hong Kong) Limited	Hong Kong
Kulicke & Soffa (Israel) Limited	Israel
Kulicke & Soffa (S.E.A.) Pte. Ltd.	Singapore
Kulicke & Soffa (Suzhou) Limited	China
Kulicke and Soffa (Switzerland) Management GmbH	Switzerland
Kulicke & Soffa Foreign Investments, LLC	US
Kulicke & Soffa Global Holdings Corporation	Labuan, Malaysia
Kulicke & Soffa Global Investments, Inc.	US
Kulicke & Soffa Holding Company Pte. Ltd.	Singapore
Kulicke & Soffa Holdings B.V.	The Netherlands
Kulicke & Soffa Liteq B.V.	The Netherlands
Kulicke & Soffa Luxembourg Investment Holdings S.à r.L	Luxembourg
Kulicke and Soffa Luxembourg S.à r.L	Luxembourg
Kulicke & Soffa Netherlands B.V.	The Netherlands
Kulicke & Soffa Netherlands Investment Holdings B.V.	The Netherlands
Kulicke & Soffa Pte. Ltd.	Singapore
Kulicke and Soffa Funding Company	Ireland
Kulicke & Soffa Holland Holdings B.V.	The Netherlands
Micro-Swiss Limited	Israel
Orthodyne Electronics Corporation	US

(1) Certain subsidiaries are omitted; however, such subsidiaries, even if combined into one subsidiary, would not constitute a “significant subsidiary” within the meaning of Regulation S-X.

EX-23

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S‑8 (Nos. 333-217058, 333-160010, 333-148052, 333-103433, 333-37278) of Kulicke & Soffa Industries, Inc. of our report dated November 16, 2017 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.

/s/ PricewaterhouseCoopers LLP

Singapore

November 16, 2017

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Fusen Chen, certify that:

1. I have reviewed this annual report on Form 10-K of Kulicke and Soffa Industries, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 16, 2017	By:	/s/ FUSEN CHEN
		Fusen Chen
		Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Jonathan Chou, certify that:

1. I have reviewed this annual report on Form 10-K of Kulicke and Soffa Industries, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 16, 2017	By:	/s/ JONATHAN CHOU
		Jonathan Chou
		Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Fusen Chen, Chief Executive Officer of Kulicke and Soffa Industries, Inc., do hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1. the Annual Report on Form 10-K of Kulicke and Soffa Industries, Inc. for the fiscal year ended September 30, 2017 (the “Fiscal 2017 Form 10-K”), which this certification accompanies, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Fiscal 2017 Form 10-K fairly presents, in all material respects, the financial condition and results of operations of Kulicke and Soffa Industries, Inc.

Date: November 16, 2017	By:	/s/ FUSEN CHEN
		Fusen Chen
		Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Jonathan Chou, Executive Vice President, Chief Financial Officer and Principal Accounting Officer of Kulicke and Soffa Industries, Inc., do hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1. the Annual Report on Form 10-K of Kulicke and Soffa Industries, Inc. for the fiscal year ended September 30, 2017 (the “Fiscal 2017 Form 10-K”), which this certification accompanies, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Fiscal 2017 Form 10-K fairly presents, in all material respects, the financial condition and results of operations of Kulicke and Soffa Industries, Inc.

Date: November 16, 2017	By:	/s/ JONATHAN CHOU
		Jonathan Chou
		Executive Vice President and Chief Financial Officer

XML

DOCUMENT AND ENTITY INFORMATION - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Nov. 14, 2017	Mar. 31, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	KULICKE & SOFFA INDUSTRIES INC
Entity Central Index Key	0000056978
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Trading Symbol	klic
Entity Common Stock, Shares Outstanding		70,603,793
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,442.1

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2017	Oct. 01, 2016
Current assets:
Cash and cash equivalents		$ 392,410	$ 423,907
Restricted cash	[1]	530	0
Short-term investments		216,000	124,000
Accounts and notes receivable, net of allowance for doubtful accounts of $79 and $506, respectively		198,480	130,455
Inventories, net		122,023	87,295
Prepaid expenses and other current assets		23,939	15,285
Total current assets		953,382	780,942
Property, plant and equipment, net		67,762	50,342
Goodwill		56,318	81,272	[2]
Intangible assets, net		62,316	50,810
Deferred tax asset		27,771	16,822
Equity investments		1,502	0
Other assets		2,056	2,256
TOTAL ASSETS		1,171,107	982,444
Current liabilities:
Accounts payable		51,354	41,813
Accrued expenses and other current liabilities		132,314	63,954
Income taxes payable		16,780	12,830
Total current liabilities		200,448	118,597
Financing obligation		16,074	16,701
Deferred income taxes		26,779	27,697
Other liabilities		14,870	12,931
TOTAL LIABILITIES		258,171	175,926
Commitments and contingent liabilities (Note 16)
SHAREHOLDERS' EQUITY:
Preferred stock, without par value:		0	0
Authorized 200,000 shares; issued 83,953 and 83,231 respectively; outstanding 70,197 and 70,420 shares, respectively		506,515	498,676
Treasury stock, at cost, 13,756 and 12,811 shares, respectively		(157,604)	(139,407)
Retained earnings		561,986	449,975
Accumulated other comprehensive gain / (loss)		2,039	(2,726)
TOTAL SHAREHOLDERS' EQUITY		912,936	806,518
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY		$ 1,171,107	$ 982,444

[1] Fair value approximates cost basis.

[2] Balances have been recasted due to the operating and reportable segments realignment.

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2017	Oct. 01, 2016
Consolidated Balance Sheets Parenthetical [Abstract]
Allowance for doubtful accounts and notes receivable	$ 79	$ 506
Preferred stock, without par value (usd per share)	$ 0	$ 0
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Common stock, no par value (usd per share)	$ 0	$ 0
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	83,953	83,231
Common stock, shares outstanding	70,197	70,420
Treasury stock, shares	13,756	12,811

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017		Oct. 01, 2016		Oct. 03, 2015
Income Statement [Abstract]
Net revenue	$ 809,041		$ 627,192		$ 536,471
Cost of sales	433,995		340,463		277,379
Gross profit	375,046		286,729		259,092
Selling, general and administrative	141,382		141,816		131,808
Research and development	100,203		92,374		90,033
Impairment Charges	35,207		0		0
Operating expenses	276,792		234,190		221,841
Income from operations	98,254		52,539		37,251
Interest income	6,491		3,318		1,637
Interest expense	(1,059)		(1,107)		(1,183)
Income from operations before income taxes	103,686		54,750		37,705
Income tax expense / (benefit)	(8,135)		7,638		(12,934)
Share of results of equity method investee	(190)		0		0
Net income	$ 112,011		$ 47,112		$ 50,639
Net income per share:
Basic (in dollars per share)	$ 1.58	[1]	$ 0.67	[1]	$ 0.67
Diluted (in dollars per share)	$ 1.55	[1]	$ 0.67	[1]	$ 0.67
Weighted average shares outstanding:
Basic (in shares)	70,906		70,477		75,414
Diluted (in shares)	72,063		70,841		75,659

[1] EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 112,011	$ 47,112	$ 50,639
Other comprehensive income:
Foreign currency translation adjustment	1,960	624	(3,360)
Unrecognized actuarial (loss) on pension plan, net of tax	990	(1,791)	19
Other Comprehensive Income (Loss), Foreign Currency Transaction, Translation Adjustment and unrecognized actuarial (loss), Net of Tax, Portion Attributable to Parent	2,950	(1,167)	(3,341)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	669	(566)	(1,008)
Other Comprehensive Loss, Reclassification Adjustment from AOCI on Derivatives, Net of Tax	1,146	104	1,008
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent	1,815	(462)	0
Total other comprehensive income / (loss)	4,765	(1,629)	(3,341)
Comprehensive income	$ 116,776	$ 45,483	$ 47,298

XML

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock [Member]	Treasury Stock [Member]	Accumulated Income (Deficit) [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Sep. 27, 2014	$ 786,600	$ 479,116	$ (46,984)	$ 352,224	$ 2,244
Beginning Balance, shares at Sep. 27, 2014		76,626,000
Issuance of stock for services rendered	1,049	$ 1,049
Treasury Stock, Shares, Acquired			(6,405,000)
Issuance of stock for services rendered, shares		83,000
Repurchase of common stock	(77,872)		$ (77,872)
Exercise of stock options	694	$ 694
Exercise of stock options, shares		75,000
Issuance of shares for market-based restricted stock and time-based restricted stock	0	$ 0
Issuance of shares for market-based restricted stock and time-based restricted stock, shares		861,000
Excess tax benefits from stock based compensation	540	$ 540
Equity-based compensation expense	10,940	10,940
Components of comprehensive income:
Net income	50,639			50,639
Translation adjustment	(3,360)				(3,360)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0
Unamortized pension costs	19				19
Comprehensive income	47,298			50,639	(3,341)
Ending Balance at Oct. 03, 2015	769,249	$ 492,339	$ (124,856)	402,863	(1,097)
Ending Balance, shares at Oct. 03, 2015		71,240,000
Issuance of stock for services rendered	551	$ 551
Treasury Stock, Shares, Acquired			(1,408,000)
Issuance of stock for services rendered, shares		50,000
Repurchase of common stock	(14,551)		$ (14,551)
Exercise of stock options	410	$ 410
Exercise of stock options, shares		53,000
Issuance of shares for market-based restricted stock and time-based restricted stock	0	$ 0
Issuance of shares for market-based restricted stock and time-based restricted stock, shares		485,000
Excess tax benefits from stock based compensation	197	$ 197
Equity-based compensation expense	5,179	5,179
Components of comprehensive income:
Net income	47,112			47,112
Translation adjustment	624				624
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(462)				(462)
Unamortized pension costs	(1,791)				(1,791)
Comprehensive income	45,483			47,112	(1,629)
Ending Balance at Oct. 01, 2016	806,518	$ 498,676	$ (139,407)	449,975	(2,726)
Ending Balance, shares at Oct. 01, 2016		70,420,000
Issuance of stock for services rendered	$ 750
Treasury Stock, Shares, Acquired	(944,840.00)		(945,000)
Issuance of stock for services rendered, shares		45,000
Repurchase of common stock	$ (18,197)		$ (18,197)
Exercise of stock options	509	$ 509
Exercise of stock options, shares		61,000
Issuance of shares for market-based restricted stock and time-based restricted stock	0	$ 0
Issuance of shares for market-based restricted stock and time-based restricted stock, shares		616,000
Excess tax benefits from stock based compensation	(4,392)	$ (4,392)
Equity-based compensation expense	10,972	10,972
Components of comprehensive income:
Net income	112,011			112,011
Translation adjustment	1,960				1,960
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	1,815				1,815
Unamortized pension costs	990				990
Comprehensive income	116,776			112,011	4,765
Ending Balance at Sep. 30, 2017	$ 912,936	$ 506,515	$ (157,604)	$ 561,986	$ 2,039
Ending Balance, shares at Sep. 30, 2017		70,197,000

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 112,011	$ 47,112	$ 50,639
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,257	16,230	18,972
Impairment Charges	35,207	0	0
Equity-based compensation and employee benefits	11,722	5,730	11,989
(Excess tax benefits from stock based compensation) Reversal of excess tax benefits	4,392	(197)	(540)
Adjustment for doubtful accounts	(136)	(115)	478
Adjustment for inventory valuation	10,925	6,676	3,978
Deferred taxes	(17,499)	(15,530)	(16,738)
(Gain) Loss on disposal of property, plant and equipment	(999)	(55)	(71)
Unrealized foreign currency translation	1,362	1,318	(6,631)
Share of results of equity method investee	(190)	0	0
Changes in operating assets and liabilities, net of assets and liabilities assumed in businesses combinations:
Accounts and notes receivable	(67,879)	(22,139)	72,304
Inventory	(47,425)	(16,340)	(14,471)
Prepaid expenses and other current assets	(8,468)	1,599	493
Accounts Payable, accrued expenses and other current liabilities	78,254	34,106	(32,766)
Income taxes payable	3,946	10,492	(1,968)
Other, net	4,830	(480)	2,207
Net cash provided by operating activities	136,310	68,407	87,875
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of business, net of cash acquired	(27,119)	0	(93,153)
Purchases of property, plant and equipment	(25,590)	(6,218)	(10,269)
Proceeds from sales of property, plant and equipment	1,352	1,053	180
Purchases of equity investments	(1,312)	0	0
Purchase of short term investments	(305,000)	(124,000)	(1,630)
Maturity of short term investments	213,000	0	10,763
Changes in Restricted Cash	(530)	0	0
Net cash used in investing activities	(145,199)	(129,165)	(94,109)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment on debts	(604)	(542)	(10,815)
Proceeds from Short-term Debt	0	0	837
Proceeds from exercise of common stock options	509	410	694
Repurchase of common stock	(18,197)	(14,551)	(75,715)
Excess tax benefits from stock based compensation (Reversal of excess tax benefits)	(4,392)	197	540
Net cash used in financing activities	(22,684)	(14,486)	(84,459)
Effect of exchange rate changes on cash and cash equivalents	76	537	1,326
Changes in cash and cash equivalents	(31,497)	(74,707)	(89,367)
Cash and cash equivalents at beginning of period	423,907	498,614	587,981
Cash and cash equivalents at end of period	392,410	423,907	498,614
CASH PAID FOR:
Interest	1,059	1,107	1,183
Income taxes	$ 8,283	$ 10,020	$ 5,192

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BASIS OF PRESENTATION

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

These consolidated financial statements include the accounts of Kulicke and Soffa Industries, Inc. and its subsidiaries (the “Company”), with appropriate elimination of intercompany balances and transactions.

Fiscal Year

Each of the Company's first three fiscal quarters ends on the Saturday that is 13 weeks after the end of the immediately preceding fiscal quarter. The fourth quarter of each fiscal year ends on the Saturday closest to September 30. In fiscal years consisting of 53 weeks, the fourth quarter will consist of 14 weeks. The 2017, 2016, and 2015 fiscal years ended on September 30, 2017, October 1, 2016 and October 3, 2015, respectively.

Nature of Business

The Company designs, manufactures and sells capital equipment and tools as well as services, maintains, repairs and upgrades equipment, all used to assemble semiconductor devices. The Company's operating results depend upon the capital and operating expenditures of semiconductor device manufacturers, integrated device manufacturers, outsourced semiconductor assembly and test providers (“OSATs”), and other electronics manufacturers, including automotive electronics suppliers, worldwide which, in turn, depend on the current and anticipated market demand for semiconductors and products utilizing semiconductors. The semiconductor industry is highly volatile and experiences downturns and slowdowns which can have a severe negative effect on the semiconductor industry's demand for semiconductor capital equipment, including assembly equipment manufactured and sold by the Company and, to a lesser extent, tools, including those sold by the Company. These downturns and slowdowns have in the past adversely affected the Company's operating results. The Company believes such volatility will continue to characterize the industry and the Company's operations in the future.

Use of Estimates

The preparation of consolidated financial statements requires management to make assumptions, estimates and judgments that affect the reported amounts of assets and liabilities, net revenue and expenses during the reporting periods, and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. On an ongoing basis, management evaluates estimates, including but not limited to, those related to accounts receivable, reserves for excess and obsolete inventory, carrying value and lives of fixed assets, goodwill and intangible assets, valuation allowances for deferred tax assets and deferred tax liabilities, repatriation of un-remitted foreign subsidiary earnings, equity-based compensation expense, and warranties. Management bases its estimates on historical experience and on various other assumptions believed to be reasonable. As a result, management makes judgments regarding the carrying values of the Company's assets and liabilities that are not readily apparent from other sources. Authoritative pronouncements, historical experience and assumptions are used as the basis for making estimates, and on an ongoing basis, management evaluates these estimates. Actual results may differ from these estimates.

Vulnerability to Certain Concentrations

Financial instruments which may subject the Company to concentrations of credit risk as of September 30, 2017 and October 1, 2016 consisted primarily of trade receivables. The Company manages credit risk associated with investments by investing its excess cash in highly rated debt instruments of the U.S. Government and its agencies, financial institutions, and corporations. The Company has established investment guidelines relative to diversification and maturities designed to maintain safety and liquidity. These guidelines are periodically reviewed and modified as appropriate. The Company does not have any exposure to sub-prime financial instruments or auction rate securities.

The Company's trade receivables result primarily from the sale of semiconductor equipment, related accessories and replacement parts, and tools to a relatively small number of large manufacturers in a highly concentrated industry. Write-offs of uncollectible accounts have historically not been significant; however, the Company monitors its customers' financial strength to reduce the risk of loss.

The Company's products are complex and require raw materials, components and subassemblies having a high degree of reliability, accuracy and performance. The Company relies on subcontractors to manufacture many of these components and subassemblies and it relies on sole source suppliers for some important components and raw material inventory.

Foreign Currency Translation and Remeasurement

The majority of the Company's business is transacted in U.S. dollars; however, the functional currencies of some of the Company's subsidiaries are their local currencies. In accordance with ASC No. 830, Foreign Currency Matters (“ASC 830”), for a subsidiary of the Company that has a functional currency other than the U.S. dollar, gains and losses resulting from the translation of the functional currency into U.S. dollars for financial statement presentation are not included in determining net income, but are accumulated in the cumulative translation adjustment account as a separate component of shareholders' equity (accumulated other comprehensive income / (loss)). Under ASC 830, cumulative translation adjustments are not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries. Gains and losses resulting from foreign currency transactions are included in the determination of net income.

The Company's operations are exposed to changes in foreign currency exchange rates due to transactions denominated in currencies other than the location's functional currency. The Company is also exposed to foreign currency fluctuations that impact the remeasurement of net monetary assets of those operations whose functional currency, the U.S. dollar, differs from their respective local currencies, most notably in Israel, Malaysia, Singapore and Switzerland. In addition to net monetary remeasurement, the Company has exposures related to the translation of subsidiary financial statements from their functional currency, the local currency, into its reporting currency, the U.S. dollar, most notably in Netherlands, China, Taiwan, Japan and Germany. The Company's U.S. operations also have foreign currency exposure due to net monetary assets denominated in currencies other than the U.S. dollar.

Derivative Financial Instruments

The Company’s primary objective for holding derivative financial instruments is to manage the fluctuation in foreign exchange rates and accordingly is not speculative in nature. The Company’s international operations are exposed to changes in foreign exchange rates as described above. The Company has established a program to monitor the forecasted transaction currency risk to protect against foreign exchange rate volatility. Generally, the Company uses foreign exchange forward contracts in these hedging programs. The instruments, which have maturities of up to twelve months, are recorded at fair value and are included in prepaid expenses and other current assets, or accrued expenses and other current liabilities.

Our accounting policy for derivative financial instruments is based on whether they meet the criteria for designation as a cash flow hedge. A designated hedge with exposure to variability in the functional currency equivalent of the future foreign currency cash flows of a forecasted transaction is referred to as a cash flow hedge. The criteria for designating a derivative as a cash flow hedge include the assessment of the instrument’s effectiveness in risk reduction, matching of the derivative instrument to its underlying transaction, and the assessment of the probability that the underlying transaction will occur. For derivatives with cash flow hedge accounting designation, we report the after-tax gain / (loss) from the effective portion of the hedge as a component of accumulated other comprehensive income / (loss) and reclassify it into earnings in the same period in which the hedged transaction affects earnings and in the same line item on the consolidated statement of operations as the impact of the hedged transaction. Derivatives that we designate as cash flow hedges are classified in the consolidated statement of cash flows in the same section as the underlying item, primarily within cash flows from operating activities.

The hedge effectiveness of these derivative instruments is evaluated by comparing the cumulative change in the fair value of the hedge contract with the cumulative change in the fair value of the forecasted cash flows of the hedged item.

If a cash flow hedge is discontinued because it is no longer probable that the original hedged transaction will occur as previously anticipated, the cumulative unrealized gain or loss on the related derivative is reclassified from accumulated other comprehensive income / (loss) into earnings. Subsequent gain / (loss) on the related derivative instrument is recognized into earnings in each period until the instrument matures, is terminated, is re-designated as a qualified cash flow hedge, or is sold. Ineffective portions of cash flow hedges, as well as amounts excluded from the assessment of effectiveness, are recognized in earnings.

Cash Equivalents

The Company considers all highly liquid investments with original maturities of three months or less when purchased to be cash equivalents. Cash equivalents are measured at fair value based on level one measurement, or quoted market prices, as defined by ASC No. 820, Fair Value Measurements and Disclosures. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for cash equivalents.

Investments

Investments, other than cash equivalents, are classified as “trading,” “available-for-sale” or “held-to-maturity,” in accordance with ASC No. 320, Investments-Debt & Equity Securities, and depending upon the nature of the investment, its ultimate maturity date in the case of debt securities, and management's intentions with respect to holding the securities. Investments classified as “trading” are reported at fair market value, with unrealized gains or losses included in earnings. Investments classified as “available-for-sale” are reported at fair market value, with net unrealized gains or losses reflected as a separate component of shareholders' equity (accumulated other comprehensive income (loss)). The fair market value of trading and available-for-sale securities is determined using quoted market prices at the balance sheet date. Investments classified as held-to-maturity are reported at amortized cost. Realized gains and losses are determined on the basis of specific identification of the securities sold.

Equity Investments

The Company applies the equity method of accounting to investments that provide it with ability to exercise significant influence over the entities in which it lacks controlling financial interest and is not a primary beneficiary. Our proportionate share of the income or loss is recognized on a one-quarter lag and is recorded as share of results of equity-method investee, net of tax.

Allowance for Doubtful Accounts

The Company maintains allowances for doubtful accounts for estimated losses resulting from its customers' failure to make required payments. If the financial condition of the Company's customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The Company is also subject to concentrations of customers and sales to a few geographic locations, which could also impact the collectability of certain receivables. If global or regional economic conditions deteriorate or political conditions were to change in some of the countries where the Company does business, it could have a significant impact on the results of operations, and the Company's ability to realize the full value of its accounts receivable.

Inventories

Inventories are stated at the lower of cost (on a first-in first-out basis) or net realizable value. The Company generally provides reserves for obsolete inventory and for inventory considered to be in excess of demand. Demand is generally defined as 18 months forecasted future consumption for equipment, 24 months forecasted future consumption for spare parts, and 12 months forecasted future consumption for tools. Forecasted consumption is based upon internal projections, historical sales volumes, customer order activity and a review of consumable inventory levels at customers' facilities. The Company communicates forecasts of its future consumption to its suppliers and adjusts commitments to those suppliers accordingly. If required, the Company reserves the difference between the carrying value of its inventory and the lower of cost or net realizable value, based upon projections about future consumption, and market conditions. If actual market conditions are less favorable than projections, additional inventory reserves may be required.

Inventory reserve provision for certain subsidiaries is determined based on management's estimate of future consumption for equipment and spare parts. This estimate is based on historical sales volumes, internal projections and market developments and trends.

Property, Plant and Equipment

Property, plant and equipment are carried at cost. The cost of additions and those improvements which increase the capacity or lengthen the useful lives of assets are capitalized while repair and maintenance costs are expensed as incurred. Depreciation and amortization are provided on a straight-line basis over the estimated useful lives as follows: buildings 25 years; machinery, equipment, furniture and fittings 3 to 10 years; and leasehold improvements are based on the shorter of the life of lease or life of asset. Purchased computer software costs related to business and financial systems are amortized over a five-year period on a straight-line basis. Land is not depreciated.

Valuation of Long-Lived Assets

In accordance with ASC No. 360, Property, Plant & Equipment ("ASC 360"), the Company's property, plant and equipment is tested for impairment based on undiscounted cash flows when triggering events occur, and if impaired, written-down to fair value based on either discounted cash flows or appraised values. ASC 360 also provides a single accounting model for long-lived assets to be disposed of by sale and establishes additional criteria that would have to be met to classify an asset as held for sale. The carrying amount of an asset or asset group is not recoverable to the extent it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset or asset group. Estimates of future cash flows used to test the recoverability of a long-lived asset or asset group must incorporate the entity's own assumptions about its use of the asset or asset group and must factor in all available evidence.

ASC 360 requires that long-lived assets be tested for recoverability whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. Such events include significant under-performance relative to historical internal forecasts or projected future operating results; significant changes in the manner of use of the assets; significant negative industry or economic trends; or significant changes in market capitalization. During the fiscal years ended September 30, 2017 and October 1, 2016, no "triggering" events occurred.

Accounting for Impairment of Goodwill

The Company operates two reportable segments: Capital Equipment and APS. Goodwill was recorded for the acquisitions of Orthodyne Electronics Corporation ("Orthodyne"), Assembléon B.V. ("Assembléon") and Liteq B.V. ("Liteq") in fiscal 2009, 2015 and 2017, respectively.

ASC No. 350, Intangibles-Goodwill and Other ("ASC 350") requires goodwill and intangible assets with indefinite lives to be reviewed for impairment annually, or more frequently if circumstances indicate a possible impairment. We assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, after assessing the qualitative factors, a company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying value, then performing the two-step impairment test is unnecessary. However, if a company concludes otherwise, then it is required to perform the first step of the two-step goodwill impairment test. If the carrying value of a reporting unit exceeds its fair value in the first step of the test, then a company is required to perform the second step of the goodwill impairment test to measure the amount of the reporting unit's goodwill impairment loss, if any. 

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. This ASU will be effective for us beginning in our first quarter of 2021 and early adoption is permitted. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04. This eliminates the requirement to perform step 2 of the goodwill impairment test.

In fiscal 2017 and 2016, the Company chose to bypass the qualitative assessment and proceed directly to performing the quantitative evaluation of the fair value of the reporting unit, to compare against the carrying value of the reporting unit.

As part of the annual evaluation, the Company performs an impairment test of its goodwill in the fourth quarter of each fiscal year to coincide with the completion of its annual forecasting and refreshing of its business outlook processes. On an ongoing basis, the Company monitors if a “triggering” event has occurred that may have the effect of reducing the fair value of a reporting unit below its respective carrying value. Adverse changes in expected operating results and/or unfavorable changes in other economic factors used to estimate fair values could result in a non-cash impairment charge in the future.

Impairment assessments inherently involve judgment as to the assumptions made about the expected future cash flows and the impact of market conditions on those assumptions. Future events and changing market conditions may impact the assumptions as to prices, costs, growth rates or other factors that may result in changes in the estimates of future cash flows. Although the Company believes the assumptions that it has used in testing for impairment are reasonable, significant changes in any one of the assumptions could produce a significantly different result. Indicators of potential impairment may lead the Company to perform interim goodwill impairment assessments, including significant and unforeseen customer losses, a significant adverse change in legal factors or in the business climate, a significant adverse action or assessment by a regulator, a significant stock price decline or unanticipated competition.

For further information on goodwill and intangible assets, see Note 5 below.

Revenue Recognition

In accordance with ASC No. 605, Revenue Recognition, the Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, the collectability is reasonably assured, and customer acceptance, when applicable, has been received or we otherwise have been released from customer acceptance obligations. If terms of the sale provide for a customer acceptance period, revenue is recognized upon the expiration of the acceptance period or customer acceptance, whichever occurs first. Services revenue is generally recognized over the period that the services are provided.

Shipping and handling costs billed to customers are recognized in net revenue. Shipping and handling costs paid by the Company are included in cost of sales.

Research and Development

The Company charges research and development costs associated with the development of new products to expense when incurred. In certain circumstances, pre-production machines that the Company intends to sell are carried as inventory until sold.

Income Taxes

In accordance with ASC No. 740, Income Taxes, deferred income taxes are determined using the balance sheet method. The Company records a valuation allowance to reduce its deferred tax assets to the amount it expects is more likely than not to be realized. While the Company has considered future taxable income and its ongoing tax planning strategies in assessing the need for the valuation allowance, if it were to determine that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, an adjustment to the deferred tax asset would increase income in the period when such determination is made. Likewise, should the Company determine it would not be able to realize all or part of its net deferred tax assets in the future, an adjustment to the deferred tax asset would decrease income in the period when such determination is made.

In accordance with ASC No. 740 Topic 10, Income Taxes, General (“ASC 740.10”), the Company accounts for uncertain tax positions taken or expected to be taken in its income tax return. Under ASC 740.10, the Company utilizes a two-step approach for evaluating uncertain tax positions. Step one, or recognition, requires a company to determine if the weight of available evidence indicates a tax position is more likely than not to be sustained upon examination solely based on its technical merit. Step two, or measurement, is based on the largest amount of benefit, which is more likely than not to be realized on settlement with the taxing authority, including resolution of related appeals or litigation processes, if any.

The Financial Accounting Standards Board ("FASB") has issued Accounting Standard Update ("ASU") 2015-17, Income Taxes (Topic 740), regarding the presentation of deferred income taxes. Under the new standard, both deferred tax liabilities and assets are required to be classified as noncurrent in a classified balance sheet. ASU 2015-17 will become effective for fiscal years, and the interim periods within those years, beginning after December 15, 2016 (our fiscal 2018), with early adoption allowed. During the first quarter of fiscal 2016, we elected to prospectively adopt ASU 2015-17, thus reclassifying current deferred taxes to noncurrent on the accompanying Consolidated Balance Sheet.

Equity-Based Compensation

The Company accounts for equity-based compensation under the provisions of ASC No. 718, Compensation - Stock Compensation (“ASC 718”). ASC 718 requires the recognition of the fair value of the equity-based compensation in net income. Compensation expense associated with market-based restricted stock is determined using a Monte-Carlo valuation model, and compensation expense associated with time-based and performance-based restricted stock is determined based on the number of shares granted and the fair value on the date of grant. The fair value of the Company's stock option awards are estimated using a Black-Scholes option valuation model. In addition, the calculation of equity-based compensation costs requires that the Company estimate the number of awards that will be forfeited during the vesting period. The fair value of equity-based awards is amortized over the vesting period of the award and the Company elected to use the straight-line method for awards granted after the adoption of ASC 718.

Earnings per Share

Earnings per share (“EPS”) are calculated in accordance with ASC No. 260, Earnings per Share. Basic EPS include only the weighted average number of common shares outstanding during the period. Diluted EPS include the weighted average number of common shares and the dilutive effect of stock options, restricted stock and share unit awards and other convertible instruments outstanding during the period, when such instruments are dilutive.

In accordance with ASC No. 260.10.55, Earnings per Share - Implementation & Guidance, the Company treats all outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends as participating in undistributed earnings with common shareholders. Awards of this nature are considered participating securities and the two-class method of computing basic and diluted EPS must be applied.

Accounting for Business Acquisitions

The Company accounts for business acquisitions in accordance with ASC No. 805, Business Combinations. The fair value of the net assets acquired and the results of operations of the acquired businesses are included in the Consolidated Financial Statements from the acquisition date forward. The Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and results of operations during the reporting period. Estimates are used in accounting for, among other things, the fair value of acquired net operating assets, property and equipment, deferred revenue, intangible assets and related deferred tax liabilities, useful lives of plant and equipment, and amortizable lives of acquired intangible assets. Any excess of the purchase consideration over the identified fair value of the assets and liabilities acquired is recognized as goodwill. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change materially between the preliminary allocation and end of the purchase price allocation period.

Restructuring charges

Restructuring charges may consist of voluntary or involuntary severance-related charges, asset-related charges and other costs due to exit activities. We recognize voluntary termination benefits when an employee accepts the offered benefit arrangement. We recognize involuntary severance-related charges depending on whether the termination benefits are provided under an ongoing benefit arrangement or under a one-time benefit arrangement. If the former, we recognize the charges once they are probable and the amounts are estimable. If the latter, we recognize the charges once the benefits have been communicated to employees.

Recent Accounting Pronouncements

Restricted Cash

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force). This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU will be effective for us beginning in our first quarter of 2019. Early adoption is permitted beginning in our first quarter of fiscal 2018. We do not expect the adoption of the ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Income Taxes

In October 2016, the FASB issued ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory. The new guidance requires the tax effects of intercompany transactions (other than transfers of inventory) to be recognized currently. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2017 (our fiscal 2019), including interim periods within those years, with an option to early adopt. The modified retrospective approach will be required for transition to the new guidance, with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the balance of intellectual property transferred between our subsidiaries as of the adoption date. We are currently evaluating the timing of the adoption of this ASU.

Stock Compensation

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. This ASU will be effective for us beginning in our first quarter of fiscal 2018. In the year of adoption, the Company anticipates we will recognize unrealized excess tax benefits of $5.4 million in retained earnings.

In May 2017, the FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. This ASU specifies the modification accounting applicable to any entity which changes the terms or conditions of a share-based payment award. This ASU will be effective for us beginning in our first quarter of fiscal 2019. Early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. This ASU will be effective for us beginning in our first quarter of fiscal 2020 and early adoption is permitted. The adoption of this ASU will result in an increase to our consolidated balance sheets for these right of use assets and corresponding liabilities. However, the ultimate impact of adopting this ASU will depend on the Company's lease portfolio as of the adoption date. We are currently evaluating the timing and other effects of the adoption of this ASU on our financial statements.

Financial Instruments

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU replaces the impairment methodology in current GAAP, which delays recognition of credit losses until it is probable a loss has been incurred, with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU will be effective for us beginning in our first quarter of fiscal 2020. Early adoption is permitted beginning in our first quarter of 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

Derivatives and Hedging

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (Topic 815). The new guidance expands and refines hedge accounting for both financial and non-financial risks. The new guidance also modifies disclosure requirements for hedging activities. The new guidance will be effective for us beginning in our first quarter of fiscal 2020, and early adoption is permitted in any interim period. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements as well as whether to adopt the new guidance early.

Business Combinations

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The new guidance provides a new framework for determining whether business development transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This ASU will be effective for us beginning in our first quarter of 2019. Earlier application is permitted for acquisition or derecognition events that occurred prior to issuance date or effective date of the guidance only when the transaction has not been reported in financial statements that have been issued or made available for issuance. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Intangibles—Goodwill and Other

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04.

Statement of Cash Flows

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the classification of certain specific cash flow issues including debt prepayment or extinguishment costs, settlement of certain debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of certain insurance claims and distributions received from equity method investees. This ASU will be effective for us beginning in our first quarter of 2019 and early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Revenue Recognition

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled when products are transferred to customers.

Subsequently, the FASB has issued the following standards related to ASU 2014-09: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (“ASU 2016-08”); ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing (“ASU 2016-10”); ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients (“ASU 2016-12”); and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers (“ASU 2016-20”). The Company must adopt ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20 with ASU 2014-09 (collectively, the “new revenue standards”).

The new revenue standards may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The new standard is effective for annual reporting periods beginning after December 15, 2017. The new standard permits companies to early adopt the new standard, but not before annual reporting periods beginning after December 15, 2016. The Company will not early adopt the new standard and therefore the new standard will be effective for the Company in the first quarter of its fiscal 2019. We have made progress in our review of the impact of this guidance on revenue related activities, and are monitoring additional changes, modifications, clarifications or interpretations undertaken by the FASB. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the Company's revenue portfolio as of the adoption date.

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RESTRUCTURING (Notes)

12 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

RESTRUCTURING

RESTRUCTURING

In fiscal 2016, the Company implemented a restructuring program to streamline its international operations and functions as well as to consolidate its organization structure to achieve our cost-reduction, productivity and efficiency initiatives.

In fiscal 2017, the Company implemented a restructuring program to reallocate resources with respect to the EA/APMR business unit. As part of this plan, $3.8 million of restructuring related costs, consisting of $3.3 million of severance and $0.5 million of other exit costs have been reflected in the Company’s consolidated financial statements as of and for fiscal 2017.

The following table is a summary of activity related to the Company’s restructuring and other charges for fiscal 2017, 2016, and 2015:

	Fiscal Year 2017 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	37	$	3,273	$	(418	)	$	2,892
Other exit costs	6,525		38		(4,827		)	1,736
	6,562		3,311		(5,245		)	4,628

	Fiscal Year 2016 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	1,538	$	661	$	(2,162	)	$	37
Other exit costs	—		7,983		(1,458		)	6,525
	1,538		8,644		(3,620		)	6,562

	Fiscal Year 2015 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	—	$	1,850	$	(312	)	$	1,538

(1) Included within accrued expenses and other current liabilities on the Consolidated Balance Sheets.

(2) Provision for severance and benefits and other exit costs are included within selling, general and administrative expenses on the Consolidated Statements of Operations.

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BALANCE SHEET COMPONENTS

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BALANCE SHEET COMPONENTS

BALANCE SHEET COMPONENTS

The following tables reflect the components of significant balance sheet accounts as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017			October 1, 2016
Short term investments, available-for-sale(1)	$	216,000		$	124,000
Inventories, net:
Raw materials and supplies (2)	$	44,239		$	26,876
Work in process (2)	40,827			24,333
Finished goods (2)	61,596			57,166
	146,662			108,375
Inventory reserves	(24,639		)	(21,080		)
	$	122,023		$	87,295
Property, plant and equipment, net:
Land	$	2,182		$	—
Buildings and building improvements	50,910			34,472
Leasehold improvements	9,882			19,963
Data processing equipment and software (2)	34,700			32,975
Machinery, equipment, furniture and fixtures	68,143			54,730
	165,817			142,140
Accumulated depreciation(2)	(98,055		)	(91,798		)
	$	67,762		$	50,342
Accrued expenses and other current liabilities:
Wages and benefits	$	47,411		$	24,248
Accrued customer obligations (3)	50,497			13,077
Commissions and professional fees	8,555			10,908
Deferred rent	1,930			2,920
Severance (4)	3,828			1,296
Other	20,093			11,505
	$	132,314		$	63,954

(1) All short-term investments were classified as available-for-sale and were measured at fair value based on level one measurement, or quoted market prices, as defined by ASC 820. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for short-term investments. The Company did not recognize any realized gains or losses on the sale of investments during the years ended 2017 and 2016.

(2) Certain balances as at October 1, 2016 relating to Inventories and Property, plant and equipment have been reclassified for comparative purposes. These reclassifications have no impact to the Consolidated Balance Sheets as at October 1, 2016.

(3) Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

(4) Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.2 million (as of Oct 1, 2016: $0.8 million), and other severance payments which are not part of the Company's plan to streamline its global operations and functions.

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BUSINESS COMBINATION (Notes)

12 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Business Combination Disclosure [Text Block]

BUSINESS COMBINATIONS

Acquisition of Liteq

On July 2, 2017, Kulicke and Soffa Holland Holdings B.V. (“KSHH”), the Company's wholly owned subsidiary, entered into a Share Sale and Purchase Agreement (the “Agreement”) with the shareholders of Liteq to purchase all of the outstanding equity interests of Liteq. Liteq is a lithography solutions provider for advanced packaging.

The purchase price consists of EUR 25.0 million (approximately $28.6 million) cash paid at closing and additional potential earn-out payments based on Liteq's cumulative pre-tax earnings and cumulative engineering expenses for fiscal 2018 to 2022. The acquisition expands the Company's presence in the advanced packaging market.

The acquisition of Liteq was accounted for in accordance with ASC No. 805, Business Combinations, using the acquisition method. The Company has estimated the preliminary fair value of acquired assets and liabilities as of the date of acquisition based on information available. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change materially between the preliminary allocation and end of the purchase price allocation period of July 2, 2018. Any changes in these estimates may have a material impact on our Consolidated Results of Operations or Consolidated Balance Sheets.

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	July 2, 2017
Prepaid expenses and other current assets	$	199
Property, plant and equipment	107
Intangibles	18,060
Goodwill	10,253
Accounts payable	(157		)
Accrued expenses and other current liabilities	(103		)
Deferred tax liabilities	(1,240		)
Total purchase price, net of cash acquired	$	27,119

Tangible net assets (liabilities) were valued at their respective carrying amounts, which the Company believes approximate their current fair values at the acquisition date.

The valuation of identifiable intangible assets acquired, representing developed technology, reflects management’s estimates based on, among other factors, use of established valuation methods. The developed technology was determined using the relief from royalty method, and is amortized over the period of estimated benefit using the straight-line method and the estimated useful lives of ten years. The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired and includes the value of expected future cash flows of Liteq from expected synergies with our other affiliates and other unidentifiable intangible assets. None of the goodwill recorded as part of the acquisition will be deductible for income tax purposes.

In connection with the acquisition of Liteq, the Company recorded deferred tax liabilities relating to the acquired intangible assets, which are partially offset by the net amount of acquired net operating losses. The net amount of acquired net operating losses is comprised of net operating losses less the tax reserves and valuation allowance.

For the year ended September 30, 2017, the acquired business contributed a net loss of $1.4 million.

During fiscal 2017, the Company incurred $0.3 million of expenses related to the acquisition, which is included within selling, general and administrative expense in the consolidated statements of operations.

The following unaudited pro forma information presents the combined results of operations as if the acquisition had been completed on October 3, 2015, the beginning of the comparable prior annual reporting period. The unaudited pro forma results include: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of the post-acquisition share-based compensation and other compensation expense; and (iii) the associated tax impact on these unaudited pro forma adjustments.

The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the periods presented, nor are they indicative of future results of operations:

	Fiscal
(in thousands, except for per share information)	2017		2016
Revenue	$	809,041	$	627,192
Net income / (loss)	105,966		41,186
Basic income per common share	1.49		0.58
Diluted income per common share	$	1.47	$	0.58

Acquisition of Assembléon

On January 9, 2015, Kulicke & Soffa Holdings B.V. (“KSH”), the Company's wholly owned subsidiary, acquired all of the outstanding equity interests of Assembléon.

The cash purchase price of approximately $97.4 million (EUR 80 million) consisted of $72.5 million for 100% of the equity of Assembléon and $24.9 million which was used by Assembléon to settle intercompany loans with its parent company.

The acquisition of Assembléon was accounted for in accordance with ASC No. 805, Business Combinations, using the acquisition method. On January 9, 2016, the Company finalized the valuation of the tangible and identifiable intangible assets and liabilities in connection with the acquisition of Assembléon and no further adjustment was recorded.

On September 27, 2016, the escrow due date was extended until the conclusion of a legal proceeding which the Company was indemnified under the share purchase agreement. As of October 1, 2016, $8.7 million (EUR 7.7 million) was held in escrow.

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	January 9, 2015
Accounts receivable	$	9,941
Inventories	19,861
Prepaid expenses and other current assets	2,322
Deferred tax asset	157
Property, plant and equipment	531
Intangibles	61,463
Goodwill	39,726
Deferred income taxes	638
Accounts payable	(14,386		)
Borrowings financial institutions	(9,491		)
Accrued expenses and other current liabilities	(10,561		)
Income taxes payable	(1,933		)
Deferred tax liabilities	(5,115		)
Total purchase price, net of cash acquired	$	93,153

Tangible net assets (liabilities) were valued at their respective carrying amounts, which the Company believes approximate their current fair values at the acquisition date.

The valuation of identifiable intangible assets acquired reflects management’s estimates based on, among other factors, use of established valuation methods. The technology/software and product brand name was determined using the relief from royalty method. Customer relationships were valued by using multi-period excess earnings method. Identifiable intangible assets with definite lives are amortized over the period of estimated benefit using the straight-line method and the estimated useful lives of six to fifteen years. The straight-line method of amortization represents the Company’s best estimate of the distribution of the economic value of the identifiable intangible assets. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired. None of the goodwill recorded as part of the acquisition will be deductible for income tax purposes.

In connection with the acquisition of Assembléon, the Company recorded deferred tax liabilities relating to the acquired intangible assets, which is partially offset by the net amount of acquired net operating losses. The net amount of acquired net operating losses is comprised of net operating losses less the tax reserves and valuation allowance. The Company has recorded long-term income tax payable due to uncertain tax positions with respect to certain Assembléon entities.

For the year ended October 3, 2015, the acquired business contributed revenue of $59.3 million and net loss of $2.0 million.

During fiscal 2015, the Company incurred $0.9 million of expenses related to the acquisition, which is included within selling, general and administrative expense in the consolidated statements of income.

The following unaudited pro forma information presents the combined results of operations as if the acquisition had been completed on September 29, 2013, the beginning of the comparable prior annual reporting period. The unaudited pro forma results include: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of the post-acquisition share-based compensation and other compensation expense; and (iii) the associated tax impact on these unaudited pro forma adjustments.

The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred in integrating the two companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisition had occurred at the beginning of the periods presented, nor are they indicative of future results of operations:

	Fiscal
(in thousands)	2015
Revenue	$	562,754
Net income / (loss)	45,303
Basic income per common share	0.60
Diluted income per common share	0.60

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GOODWILL AND INTANGIBLE ASSETS

12 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS

Goodwill

Intangible assets classified as goodwill are not amortized. During fourth quarter of fiscal 2017, the Company recorded goodwill relating to the acquisition of Liteq. For further information on the acquisition of Liteq, please see Note 4.

The goodwill established in connection with our acquisitions of Assembléon, Orthodyne and Liteq represents the estimated future economic benefits arising from the assets we acquired that did not qualify to be identified and recognized individually. The goodwill also includes the value of expected future cash flows of Assembléon, Orthodyne and Liteq, expected synergies with our other affiliates and other unidentifiable intangible assets. The Company performs an annual impairment test of its goodwill during the fourth quarter of each fiscal year, which coincides with the completion of its annual forecasting and refreshing of business outlook process.

During the third quarter of the fiscal year ended September 30, 2017, the Company concluded that a triggering event had occurred in connection with the EA/APMR reporting unit (the former Assembléon) based on the results of an updated long-term financial outlook for the EA/APMR business that was conducted as part of the Company’s strategic review during the third quarter due to the lower demand as compared to forecast. The projection used in the fiscal 2016 annual impairment test had been developed based on the fiscal 2016 actual results, where the actual revenue had exceeded the forecast. This updated outlook projected that the near-term projected cash flows are expected to be lower than previously forecasted due to softer near-term demand in the System-in-package market. Under ASC 350, the Company is required to test its goodwill and intangible assets for impairment annually or when a triggering event has occurred that would indicate it is more likely than not that the fair value of the reporting unit is less than the carrying value including goodwill and intangible assets. Accordingly, the Company performed the first step of the goodwill impairment test for the EA/APMR reporting unit.

The Company used a discounted cash flow model to determine the fair value of the EA/APMR reporting unit. The cash flow projections used within the discounted cash flow model were prepared using the forecasted financial results of the reporting unit, which was based upon underlying estimates of the total market size using independent third party industry reports, and market share data developed using the combination of independent third party data and our internal data. Significant assumptions used to determine fair value of the EA/APMR reporting unit include terminal growth rate of 2.5%, cost reduction initiatives including restructuring, working capital, tax rate and a weighted average cost of capital (discount rate) of 10.45%.

Following the Company's early adoption of ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment in the third quarter of fiscal 2017, the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment (i.e. Step 2 of the goodwill impairment test) was eliminated. Accordingly, the Company's impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value. Based on the calculation, the Company determined that the carrying amount of the EA/APMR reporting unit exceeded its fair value by $35.2 million, requiring an impairment charge of this amount in the third quarter of fiscal 2017. The goodwill impairment charge, which is a non-cash charge, has been reflected in the Company’s Consolidated Statements of Operations for the fiscal year ended September 30, 2017.

In connection with the evaluation of the goodwill impairment in the EA/APMR reporting unit, the Company assessed tangible and intangible assets for impairment prior to performing the first step of the goodwill impairment test. As a result of this analysis, it was determined that there were no impairment charges to record related to these assets for the nine months ended September 30, 2017. No triggering event had occurred for the wedge bonder reporting unit (the former Orthodyne).

During the fourth quarter of fiscal 2017, the Company reorganized its reportable segments into (i) Capital Equipment and (ii) Aftermarket Products and Services ("APS") and realigned our reporting units to reflect the revised reporting structure. As a result of this re-alignment, the Company has five reporting units as of September 30, 2017, with two reporting units within the Capital Equipment reportable segment and three reporting units in the APS reportable segment. Please refer to Note 15, "Segment Information" for additional information on the operating and reportable segments realignment. The Company evaluated goodwill for potential impairment before and after this realignment and determined that the fair value of each component individually and in aggregate exceeded their carrying values.

The following table summarizes the Company's recorded goodwill by reportable segments as of September 30, 2017 and October 1, 2016:

(in thousands)	Capital Equipment			APS			Total
Balance at October 3, 2015 and October 1, 2016 (1)	$	33,453		$	47,819		$	81,272
Acquired in business combination	10,253			—			10,253
Goodwill impairment	(13,731		)	(21,476		)	(35,207		)
Balance at September 30, 2017	$	29,975		$	26,343		$	56,318

(1) Balances have been recasted due to the operating and reportable segments realignment.

Intangible Assets

Intangible assets with determinable lives are amortized over their estimated useful lives. The Company's intangible assets consist primarily of developed technology, customer relationships and trade and brand names.

The following table reflects net intangible assets as of September 30, 2017 and October 1, 2016: 

	As of						Average estimated
(dollar amounts in thousands)	September 30, 2017			October 1, 2016			useful lives (in years)
Developed technology	$	74,080		$	74,080		7.0 to 15.0
Acquired in business combination	18,060			—
Accumulated amortization	(41,162		)	(37,969		)
Net developed technology	$	50,978		$	36,111
Customer relationships	$	36,968		$	36,968		5.0 to 6.0
Accumulated amortization	(27,398		)	(24,455		)
Net customer relationships	$	9,570		$	12,513
Trade and brand names	$	7,515		$	7,515		7.0 to 8.0
Accumulated amortization	(5,747		)	(5,329		)
Net trade and brand names	$	1,768		$	2,186
Other intangible assets	$	2,500		$	2,500		1.9
Accumulated amortization	(2,500		)	(2,500		)
Net wedge bonder other intangible assets	$	—		$	—
Net intangible assets	$	62,316		$	50,810

The following table reflects estimated annual amortization expense related to intangible assets as of September 30, 2017:

	As of
(in thousands)	September 30, 2017
Fiscal 2018	$	7,892
Fiscal 2019	7,892
Fiscal 2020	7,892
Fiscal 2021	5,684
Fiscal 2022 and thereafter	32,956
Total amortization expense	$	62,316

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CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS

12 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

CASH AND CASH EQUIVALENTS

CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS

Cash equivalents consist of instruments with remaining maturities of three months or less at the date of purchase. In general, these investments are free of trading restrictions. We carry these investments at fair value, based on quoted market prices or other readily available market information.

Cash, cash equivalents, restricted cash and short-term investments consisted of the following as of September 30, 2017:

	As of
(dollar amounts in thousands)	September 30, 2017		October 1, 2016
Current assets:
Cash	$	65,759	$	118,335
Cash equivalents (1):
Money market funds	232,069		152,961
Time deposits (3)	89,087		133,611
Commercial paper	5,495		19,000
Total cash and cash equivalents	$	392,410	$	423,907
Restricted Cash (1)	$	530	$	—
Total restricted cash	$	530	$	—
Short-term investments (1):
Time deposits (3)	$	120,000	$	124,000
Deposits (2)	96,000		—
Total short-term investments	$	216,000	$	124,000
Total cash, cash equivalents, restricted cash and short-term investments	$	608,940	$	547,907

(1) Fair value approximates cost basis.

(2) Represents deposits that require a notice period of three months for withdrawal.

(3) Certain time deposits as at October 1, 2016 have been corrected from cash equivalents to short-term investments for comparative purposes.

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EQUITY INVESTMENTS (Notes)

12 Months Ended

Sep. 30, 2017

Schedule of Equity Method Investments [Line Items]

Equity Method Investments and Joint Ventures Disclosure [Text Block]

EQUITY INVESTMENTS

Equity investments consisted of the following as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017		October 1, 2016
Equity method investment	$	1,502	$	—

In March 2017, the Company made an investment in one of our strategic suppliers which provides the Company with the ability to exercise significant influence over the investment vehicle, in which it lacks controlling financial interest and is not a primary beneficiary. Our share of gains and losses in the equity method investment is recognized on a one-quarter lag, and is reflected as share of results of equity-method investee, net of tax, in the accompanying Consolidated Statements of Operations. During the fiscal year ended September 30, 2017, the Company recognized $0.2 million gain on equity investment.

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FAIR VALUE MEASUREMENTS

12 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

FAIR VALUE MEASURMENTS

FAIR VALUE MEASUREMENTS

Accounting standards establish three levels of inputs that may be used to measure fair value: quoted prices in active markets for identical assets or liabilities (referred to as Level 1), inputs other than Level 1 that are observable for the asset or liability either directly or indirectly (referred to as Level 2) and unobservable inputs to the valuation methodology that are significant to the measurement of fair value of assets or liabilities (referred to as Level 3).

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

We measure certain financial assets and liabilities at fair value on a recurring basis. There were no transfers between fair value measurement levels during the year ended September 30, 2017.

Fair Value Measurements on a Nonrecurring Basis

Our non-financial assets such as intangible assets and property, plant equipment are carried at cost unless impairment is deemed to have occurred.

Fair Value of Financial Instruments

Amounts reported as cash equivalents, short-term investments, accounts receivables, prepaid expenses and other current assets, accounts payable and accrued expenses approximate fair value.

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DERIVATIVE FINANCIAL INSTRUMENT (Notes)

12 Months Ended

Sep. 30, 2017

Derivative financial Instruments [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

DERIVATIVE FINANCIAL INSTRUMENTS

The Company’s international operations are exposed to changes in foreign exchange rates due to transactions denominated in currencies other than U.S. dollars. Most of the Company’s revenue and cost of materials are transacted in U.S. dollars. However, a significant amount of the Company’s operating expenses are denominated in foreign currencies, primarily in Singapore.

The foreign currency exposure of our operating expenses are generally hedged with foreign exchange forward contracts. The Company’s foreign exchange risk management programs include using foreign exchange forward contracts with cash flow hedge accounting designation to hedge exposures to the variability in the U.S.-dollar equivalent of forecasted non-U.S. dollar-denominated operating expenses. These instruments generally mature within twelve months. For these derivatives, we report the after-tax gain or loss from the effective portion of the hedge as a component of accumulated other comprehensive income (loss), and we reclassify it into earnings in the same period or periods in which the hedged transaction affects earnings and in the same line item on the Consolidated Statements of Operations as the impact of the hedged transaction.

The fair value of derivative instruments on our Consolidated Balance Sheet as of September 30, 2017 and October 1, 2016 is as follows:

	As of
(in thousands)	September 30, 2017				October 1, 2016
	Notional Amount		Fair Value Asset Derivatives(1)		Notional Amount		Fair Value Liability Derivatives(2)
Derivatives designated as hedging instruments:
Foreign exchange forward contracts (2)	$	36,404	$	1,353	$	28,997	$	462
Total derivatives	$	36,404	$	1,353	$	28,997	$	462

(1) The fair value of derivative assets is measured using level 2 fair value inputs and is included in prepaid expenses and other current assets on our Consolidated Balance Sheet.

(2) The fair value of derivative liabilities is measured using level 2 fair value inputs and is included in accrued expenses and other current liabilities on our Consolidated Balance Sheet.

(3) Hedged amounts expected to be recognized to income within the next twelve months.

The effect of derivative instruments designated as cash flow hedges in our Consolidated Statements of Operations for the year ended September 30, 2017 and October 1, 2016 was as follows:

(in thousands)	Fiscal
	2017			2016
Foreign exchange forward contract in cash flow hedging relationships:
Net gain / (loss) recognized in OCI, net of tax(1)	$	669		$	(566	)
Net (loss) / gain reclassified from accumulated OCI into income, net of tax(2)	$	(1,146	)	$	(104	)
Net gain recognized in income(3)	$	—		$	—

(1) Net change in the fair value of the effective portion classified in other comprehensive income (“OCI”).

(2) Effective portion classified as selling, general and administrative expense.

(3) Ineffective portion and amount excluded from effectiveness testing classified in selling, general and administrative expense.

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DEBT AND OTHER OBLIGATIONS

12 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

DEBT AND OTHER OBLIGATIONS

DEBT AND OTHER OBLIGATIONS

Financing Obligation

On December 1, 2013, Kulicke & Soffa Pte Ltd. (“Pte”), the Company's wholly owned subsidiary, signed a lease with DBS Trustee Limited as trustee of Mapletree Industrial Trust (the “Landlord”) to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of a building in Singapore as our corporate headquarters, as well as a manufacturing, technology, sales and service center (the “Building”). The lease has a 10 year non-cancellable term (the "Initial Term") and contains options to renew for 2 further 10 -year terms. The annual rent and service charge for the initial term range from $4 million to $5 million Singapore dollars.  

Pursuant to ASC No. 840, Leases ("ASC 840"), we have classified the Building on our balance sheet as Property, Plant and Equipment, which we are depreciating over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. At the inception of the lease, the asset and financing obligation recorded on the balance sheet was $20.0 million, which was based on an interest rate of 6.3% over the Initial Term. As of September 30, 2017, the financing obligation related to the Building is $16.8 million, which approximates fair value (Level 2). The financing obligation will be settled through a combination of periodic cash rental payments and the return of the leased property at the expiration of the lease. We do not report rent expense for the property, which is deemed owned for accounting purposes. Rather, rental payments required under the lease are considered debt service and applied to the deemed landlord financing obligation and interest expense. The Building and financing obligation are being amortized in a manner that will not generate a gain or loss upon lease termination.

Credit facilities and Bank Guarantees

On November 22, 2013, the Company obtained a $5.0 million credit facility with Citibank in connection with the issuance of bank guarantees for operational purposes. As of September 30, 2017, the outstanding amount is $3.2 million. In addition, the Company has other bank guarantees for operational purposes which are secured with corresponding deposits placed with the issuer banks. These amounts are shown as restricted cash in the Consolidated Balance Sheets.

On March 21, 2016, the Company entered into an Uncommitted Revolving Credit Agreement with United Overseas Bank Limited, New York Agency ("UOB"), providing for a $25 million revolving credit facility (the "2016 Credit Facility"). The 2016 Credit Facility is an unsecured revolving credit facility of $25 million with an initial term of one year, and has been extended on the same terms by another year until March 20, 2018. The proceeds of the 2016 Credit Facility may be used for the Company's general corporate purposes. As of September 30, 2017, there was no outstanding amount under the 2016 Credit Facility and we were in compliance with the covenants described in the 2016 Credit Facility.

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS

12 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

SHAREHOLDERS’ EQUITY AND EMPLOYEE BENEFIT PLANS

SHAREHOLDERS’ EQUITY AND EMPLOYEE BENEFIT PLANS

Common Stock and 401(k) Retirement Income Plans

The Company has a 401(k) retirement plan (the “Plan”) for eligible U.S. employees. The Plan allows for employee contributions and matching Company contributions from 4% to 6% based upon terms and conditions of the 401(k) Plan.

The following table reflects the Company’s contributions to the Plans during fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017		2016
Cash	$	1,645	$	1,544

Share Repurchase Program

On August 15, 2017, the Company announced that it fully executed its $100 million share repurchase program (the "Program"), originally announced on August 27, 2014. In addition, the Company announced that its Board of Directors approved a new share repurchase program (the "New Program") that authorizes the repurchase of up to $100 million of the Company’s common shares, from time to time over the three year period ending August 1, 2020. The Company may purchase shares of its common stock through open market and privately negotiated transactions at prices deemed appropriate by management. The Company has entered into a written trading plan under Rule 10b5-1 of the Exchange Act to facilitate repurchases under the New Program. The New Program is effective immediately, may be suspended or discontinued at any time and will be funded using the Company's available cash, cash equivalents and short-term investments. The timing and amount of repurchase transactions under the New Program depend on market conditions as well as corporate and regulatory considerations.

During the year ended September 30, 2017, the Company repurchased a total of 0.9 million shares of common stock at a cost of $18.2 million. The share repurchases were recorded in the periods they were delivered, and the payment of $18.2 million was accounted for as treasury stock in the Company’s Consolidated Balance Sheet. The Company records treasury stock purchases under the cost method using the first-in, first-out (FIFO) method. Upon reissuance of treasury stock, amounts in excess of the acquisition cost are credited to additional paid-in capital. If the Company reissues treasury stock at an amount below its acquisition cost and additional paid-in capital associated with prior treasury stock transactions is insufficient to cover the difference between acquisition cost and the reissue price, this difference is recorded against retained earnings. As of September 30, 2017, our remaining share repurchase authorization under the New Program was approximately $88.8 million.

Accumulated Other Comprehensive Income

The following table reflects accumulated other comprehensive (loss) / income reflected on the Consolidated Balance Sheets as of September 30, 2017 and October 1, 2016: 

	As of
(in thousands)	September 30, 2017			October 1, 2016
Gain from foreign currency translation adjustments	$	2,422		$	462
Unrecognized actuarial loss on pension plan, net of tax	(1,736		)	(2,726		)
Unrealized gain / (loss) on hedging	1,353			(462		)
Accumulated other comprehensive income/(loss)	$	2,039		$	(2,726	)

Equity-Based Compensation

The Company has stockholder-approved equity-based employee compensation plans (the “Employee Plans”) and director compensation plans (the “Director Plans”) (collectively, the “Equity Plans”). Under these Equity Plans, market-based share awards (collectively, “market-based restricted stock”), time-based share awards (collectively, “time-based restricted stock”), performance-based share awards (collectively, “performance-based restricted stock”), stock options, or common stock have been granted at 100% of the market price of the Company's common stock on the date of grant. As of September 30, 2017, 5.1 million shares of common stock are available for grant to its employees and directors under the 2017 Equity Plan, including previously registered shares that have been carried forward for issuance under the 2009 Equity Plan.

• Market-based restricted stock entitles the employee to receive common shares of the Company on the award vesting date if market performance objectives which measure relative total shareholder return (“TSR”) are attained. Relative TSR is calculated based upon the 90-calendar day average price of the Company's stock as compared to specific peer companies that comprise the GICS (45301020) Semiconductor Index. TSR is measured for the Company and each peer company over a performance period, which is generally three years. Vesting percentages range from 0% to 200% of awards granted. The provisions of the market-based restricted stock are reflected in the grant date fair value of the award; therefore, compensation expense is recognized regardless of whether the market condition is ultimately satisfied. Compensation expense is reversed if the award is forfeited prior to the vesting date.

• In general, stock options and time-based restricted stock awarded to employees vest annually over a three-year period provided the employee remains employed by the Company. The Company follows the non-substantive vesting method for stock options and recognizes compensation expense immediately for awards granted to retirement-eligible employees, or over the period from the grant date to the date retirement eligibility is achieved.

• In general, performance-based restricted stock (“PSU”) entitles the employee to receive common shares of the Company on the three-year anniversary of the grant date (if employed by the Company) if return on invested capital and revenue growth targets set by the Management Development and Compensation Committee (“MDCC”) of the Board of Directors on the date of grant are met. If return on invested capital and revenue growth targets are not met, performance-based restricted stock does not vest. Certain PSUs vest based on achievement of strategic goals over a certain time period or periods set by the MDCC. If the strategic goals are not achieved, the PSUs do not vest.

Equity-based compensation expense recognized in the Consolidated Statements of Operations for fiscal 2017, 2016, and 2015 was based upon awards ultimately expected to vest. In accordance with ASC No. 718, Stock Based Compensation, forfeitures have been estimated at the time of grant and were based upon historical experience. The Company reviews the forfeiture rates periodically and makes adjustments as necessary.

The following table reflects total equity-based compensation expense, which includes restricted stock, stock options and common stock, included in the Consolidated Statements of Operations for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Cost of sales	$	463	$	421	$	393
Selling, general and administrative (1)	9,015		3,244		9,127
Research and development	2,244		2,065		2,469
Total equity-based compensation expense	$	11,722	$	5,730	$	11,989

(1) The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

The following table reflects equity-based compensation expense, by type of award, for fiscal 2017, 2016, and 2015:  

	Fiscal
(in thousands)	2017		2016			2015
Market-based restricted stock	$	3,480	$	(33	)	$	4,677
Time-based restricted stock	7,492		5,255			6,129
Performance-based restricted stock	—		(43		)	131
Stock options	—		—			3
Common stock	750		551			1,049
Total equity-based compensation expense (1)	$	11,722	$	5,730		$	11,989

(1) The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

Equity-Based Compensation: employee market-based restricted stock

The following table reflects employee market-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Market-based restricted stock outstanding as of September 27, 2014	1,068		$	5,271	1.0
Granted	232					$	16.83
Forfeited or expired	(48	)
Vested	(674	)
Market-based restricted stock outstanding as of October 3, 2015	578		$	4,465	1.4
Granted	172					$	12.26
Forfeited or expired	(256	)
Vested	(10	)
Market-based restricted stock outstanding as of October 1, 2016	484		$	2,924	1.0
Granted	388					$	13.47
Forfeited or expired	(3	)
Vested	(196	)
Market-based restricted stock outstanding as of September 30, 2017	673		$	6,204	1.4

The following table reflects the assumptions used to calculate compensation expense related to the Company’s market-based restricted stock issued during fiscal 2017, 2016, and 2015:

	Fiscal
	2017			2016			2015
Grant Price	$	12.51		$	9.58		$	14.02
Expected dividend yield	N/A			N/A			N/A
Expected stock price volatility	30.39		%	30.85		%	35.48		%
Risk-free interest rate	0.96		%	0.89		%	0.89		%

Equity-Based Compensation: employee time-based restricted stock

The following table reflects employee time-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Time-based restricted stock outstanding as of September 27, 2014	1,057		$	6,720	1.4
Granted	484					$	14.06
Forfeited or expired	(29	)
Vested	(663	)
Time-based restricted stock outstanding as of October 3, 2015	849		$	7,054	1.6
Granted	597					$	9.66
Forfeited or expired	(85	)
Vested	(346	)
Time-based restricted stock outstanding as of October 1, 2016	1,015		$	6,440	1.5
Granted	715					$	13.32
Forfeited or expired	(50	)
Vested	(600	)
Time-based restricted stock outstanding as of 30 September 2017	1,080		$	7,770	1.5

Equity-Based Compensation: employee performance-based restricted stock

The following table reflects employee performance-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)
Performance-based restricted stock outstanding as of September 27, 2014	57		$	419	3.2
Granted	—
Performance-based restricted stock outstanding as of October 3, 2015	57		$	285	2.2
Granted	—
Forfeited or expired	(29	)
Vested	(28	)
Performance-based restricted stock outstanding as of October 1, 2016	—		—		0
Granted	—
Forfeited or expired	—
Vested	—
Performance-based restricted stock outstanding as of September 30, 2017	—		$	—	—

The following table reflects employee stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	220		$	8.14
Exercised	(45	)	$	8.58		$	282
Forfeited or expired	(28	)	$	7.25
Options outstanding as of October 3, 2015	147		$	8.18
Exercised	(53	)	$	5.40		$	330
Forfeited or expired	(4	)	$	9.00
Options outstanding as of October 1, 2016	90		$	8.41
Exercised	(61	)	$	8.31		$	531
Forfeited or expired	(13	)	$	8.50
Options outstanding as of September 30, 2017	16		$	8.73	0.3	$	200
Options vested and expected to vest as of September 30, 2017	16		$	8.73	0.3	$	200
Options exercisable as of September 30, 2017	16		$	8.73	0.3
In the money exercisable options as of September 30, 2017	16					$	200

Intrinsic value of stock options exercised is determined by calculating the difference between the market value of the Company's stock price at the time an option is exercised and the exercise price, multiplied by the number of shares. The intrinsic value of stock options outstanding and stock options exercisable is determined by calculating the difference between the Company's closing stock price on the last trading day of fiscal 2017 and the exercise price of in-the-money stock options, multiplied by the number of underlying shares. During fiscal 2017, the Company received $0.5 million in cash from the exercise of employee and non-employee director stock options.

As of September 30, 2017, there were no unvested employee stock options.

The following table reflects outstanding and exercisable employee stock options as of September 30, 2017:

	Options Outstanding				Options Exercisable
Range of exercise prices	Options outstanding (in thousands)	Weighted average remaining contractual life (in years)	Weighted average exercise price		Options exercisable (in thousands)	Weighted average exercise price
8.64 - 8.74	16	0.3	$	8.73	16	$	8.73

Equity-Based Compensation: non-employee directors

The 2017 Equity Plan provides for the grant of common shares to each non-employee director upon initial election to the board and on the first business day of each calendar quarter while serving on the board. The grant to a non-employee director upon initial election to the board is that number of common shares closest in value to, without exceeding, $120,000.  The quarterly grant to a non-employee director upon the first business day of each calendar year quarter is that number of common shares closest in value to, without exceeding, $32,500.

The following table reflects shares of common stock issued to non-employee directors and the corresponding fair value for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Number of common shares issued	45		50		83
Fair value based upon market price at time of issue	$	750	$	551	$	1,049

The following table reflects non-employee director stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	55		$	10.22		$	225
Exercised	(30	)	$	10.19
Forfeited or expired	(5	)	$	6.48
Options outstanding as of October 3, 2015	20		$	11.20		$	225
Exercised	—		$	—
Forfeited or expired	(20	)	$	11.00
Options outstanding as of October 1, 2016	—		$	—	—	$	—
Exercised	—		$	—
Forfeited or expired	—		$	—
Options outstanding as of September 30, 2017	—		$	—	—	$	—
Options vested and expected to vest as of September 30, 2017	—		$	—	—	$	—
Options exercisable as of September 30, 2017	—		$	—	—
In the money exercisable options as of September 30, 2017	—					$	—

No non-employee director stock options were granted during fiscal 2017, 2016, and 2015.

Pension Plan

The following table reflects the Company's defined benefits pension obligations as of September 30, 2017 and October 1, 2016:

		As of
(in thousands)		September 30, 2017		October 1, 2016
Switzerland pension obligation		$	1,951	$	2,393
Taiwan pension obligation		967		925
	Total pension obligation	$	2,918	$	3,318

Other Plans

Some of the Company's other foreign subsidiaries have retirement plans that are integrated with and supplement the benefits provided by laws of the various countries. These other plans are not required to report nor do they determine the actuarial present value of accumulated benefits or net assets available for plan benefits as they are defined contribution plans.

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EARNINGS PER SHARE

12 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

Basic income per share is calculated using the weighted average number of shares of common stock outstanding during the period. Stock options and restricted stock are included in the calculation of diluted earnings per share, except when their effect would be anti-dilutive.

The following tables reflect a reconciliation of the shares used in the basic and diluted net income per share computation for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands, except per share)	2017					2016				2015
	Basic		Diluted			Basic		Diluted		Basic		Diluted
NUMERATOR:
Net income	$	112,011	$	112,011		$	47,112	$	47,112	$	50,639	$	50,639
DENOMINATOR:
Weighted average shares outstanding - Basic	70,906		70,906			70,477		70,477		75,414		75,414
Stock options			19					32				70
Time-based restricted stock			592					274				175
Market-based restricted stock			546					58				—
Weighted average shares outstanding - Diluted			72,063					70,841				75,659
EPS:
Net income per share - Basic	$	1.58	$	1.58		$	0.67	$	0.67	$	0.67	$	0.67
Effect of dilutive shares			$	(0.03	)			$	—			$	—
Net income per share - Diluted			$	1.55				$	0.67			$	0.67

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INCOME TAXES

12 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

The following table reflects income or losses from continuing operations by location, the provision for income taxes and the effective tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(dollar amounts in thousands)	2017			2016			2015
United States operations	$	(4,114	)	$	(12,600	)	$	4,178
Foreign operations	107,800			67,350			33,527
Income from operations before tax	103,686			54,750			37,705
Income tax (benefit) / expenses	$	(8,135	)	$	7,638		$	(12,934	)
Effective tax rate	(7.8		)%	14.0		%	(34.3		)%

The following table reflects the provision for income taxes from continuing operations for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Current:
Federal	$	(3,975	)	$	871		$	1,459
State	64			53			76
Foreign	13,290			21,841			4,707
Deferred:
Federal	(15,374		)	(13,423		)	(20,250		)
State	40			12			(10		)
Foreign	(2,180		)	(1,716		)	1,084
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

The following table reflects the difference between the provision for income taxes and the amount computed by applying the statutory federal income tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Computed income tax expense based on U.S. statutory rate	$	36,290		$	19,163		$	13,197
Effect of earnings of foreign subsidiaries subject to different tax rates	(20,226		)	(7,330		)	(6,103		)
Benefits from foreign approved enterprise zones	(21,556		)	(8,531		)	(5,855		)
Benefits from research and development tax credits	(1,859		)	(2,839		)	(4,090		)
Benefits from foreign tax credits	(26,119		)	—			—
Change in permanent reinvestment assertion	—			(9,696		)	(19,704		)
Tax impact on restructuring	—			4,238			—
Tax audit settlement	—			4,889			—
Effect of permanent items	778			(2,274		)	1,822
Non-deductible goodwill impairment	8,805			—			—
Deferred taxes not benefited	6,458			3,585			2,634
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings)	6,039			4,981			4,904
Reserve for uncertain tax positions	2,936			208			886
State income tax expense (net of federal benefit)	60			996			(1,543		)
Other, net	259			248			918
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

During fiscal 2017, the Company elected to adopt the foreign tax credit for its U.S. federal tax return filings. As a result of this election, the Company has amended its U.S. tax returns from 2006 through 2015, filed its 2016 return on the same basis, and accrued the benefit for 2017.

In fiscal 2015, the Company implemented a restructuring plan to streamline its international operations and functions resulting in a change in its permanent reinvestment assertion outside the United States. In fiscal 2016, the Company continued to execute on the restructuring plan and approximately $9.7 million of deferred tax liability was reversed and recorded as a tax benefit due to the change in its permanent reinvestment assertion. As part of the plan, the Company also recorded restructuring related tax expense of approximately $4.2 million for transfers and exchanges of certain foreign subsidiaries in an effort to streamline its international operations and functions.

We consider the earnings of certain foreign subsidiaries to be permanently reinvested outside the United States. We have not recorded a deferred tax liability for U.S. federal income taxes of approximately $619.9 million of undistributed earnings. Determination of the amount of unrecognized deferred tax liability related to these earnings is not practicable, with the exception of certain foreign subsidiaries where we continue to retain a deferred tax liability for foreign withholding taxes of approximately $21.0 million, as those earnings may be distributed to its foreign parent company.

Undistributed earnings of approximately $0.5 million are not considered to be permanently reinvested outside the United States. As of September 30, 2017, the Company has provided a deferred tax liability of approximately $0.2 million for withholding taxes associated with future repatriation of earnings for certain subsidiaries to the United States.

The following table reflects the net deferred tax balance, composed of the tax effects of cumulative temporary differences for fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017			2016
Inventory reserves	$	589		$	546
Stock options	422			647
Other accruals and reserves	8,230			4,937
Domestic tax credit carryforwards	17,635			8,011
Net operating loss carryforwards	35,937			31,817
	$	62,813		$	45,958
Valuation allowance	$	(29,614	)	$	(27,381	)
Total long-term deferred tax asset	$	33,199		$	18,577
Foreign withholding tax on undistributed earnings	$	20,945		$	20,119
Fixed and intangible assets	11,262			9,333
Total long-term deferred tax liability	$	32,207		$	29,452
Total net deferred tax asset / (liability)	$	992		$	(10,875	)
Reported as
Deferred tax asset	$	27,771		$	16,822
Deferred tax liability	26,779			27,697
Total net deferred tax asset / (liability)	$	992		$	(10,875	)

As of September 30, 2017, the Company has foreign net operating loss carryforwards of $95.8 million, domestic state net operating loss carryforwards of $165.8 million, federal tax credit carryforwards of $24.3 million, and state tax credit carryforwards of $4.9 million that can reduce future taxable income. These carryforwards can be utilized in the future, prior to expiration of certain carryforwards in fiscal years 2017 through 2035 with the exception of certain credits and foreign net operating losses that have no expiration date. Pennsylvania tax law limits the time during which carryforwards may be applied against future taxes and also limits the utilization of domestic state net operating loss carryforwards to $5.0 million annually, but recent developments may change this amount in future years. The Company has recorded a valuation allowance against domestic state tax attributes and certain foreign tax attributes.

The Company continues to evaluate the realizability of all of its net deferred tax assets at each reporting date and records a benefit for deferred tax assets to the extent it has projected future taxable income or deferred tax liabilities that provide a source of future income to benefit the deferred tax asset. As a result of this analysis, the Company continues to maintain a valuation allowance against a majority of its state deferred tax assets as the realization of these assets is not more likely than not given uncertainty of future apportioned earnings in these jurisdictions.

The beginning and ending balances of the Company's unrecognized tax benefits are reconciled below for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Unrecognized tax benefit, beginning of year	$	7,453		$	7,101		$	7,192
Additions for tax positions, current year	3,657			519			—
Additions for tax positions, prior year	1,834			827			5,140
Reductions for tax positions, prior year	(882		)	(994		)	(5,231		)
Unrecognized tax benefit, end of year	$	12,062		$	7,453		$	7,101

Approximately $11.2 million of the $12.1 million of unrecognized tax benefit as of September 30, 2017, if recognized, would impact the Company's effective tax rate.

The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense.

The Company's future effective tax rate would be affected if earnings were lower than anticipated in countries where it is subjected to lower statutory rates and higher than anticipated in countries where it is subjected to higher statutory rates, by changes in the valuation of its deferred tax assets and liabilities, or by changes in tax laws, regulations, accounting principles, or interpretations thereof. In addition, changes in assertion for foreign earnings permanently or non-permanently reinvested as a result of changes in facts and circumstances could significantly impact the effective tax rate. The Company regularly assesses the effects resulting from these factors to determine the adequacy of its provision for income taxes.

It is reasonably possible that the amount of the unrecognized tax benefit with respect to certain unrecognized tax positions will increase or decrease during the next 12 months due to the expected lapse of statutes of limitation and/ or settlements of tax examinations. We cannot practicably estimate the financial outcomes of these examinations.

The Company files U.S. federal income tax return, as well as income tax returns in various state and foreign jurisdictions. The U.S. Internal Revenue Service is currently examining the fiscal years 2006 and 2015, and all years prior to fiscal 2006 are closed. For most state tax returns, tax years following fiscal 2001 remain subject to examination as a result of the generation of net operating loss carry-forwards. In the foreign jurisdictions where the Company files income tax returns, the statutes of limitations with respect to these jurisdictions vary from jurisdiction to jurisdiction and range from 4 to 6 years. The Company is currently under income tax examination by tax authorities in certain foreign jurisdictions. The Company believes that adequate provisions have been made for any adjustments that may result from tax examinations.

As a result of committing to certain capital investments and employment levels, income from operations in Singapore and Malaysia is subject to reduced tax rates. In connection with Singapore operations, the Company has been granted a decreased effective tax rate of five percent in that jurisdiction until February 1, 2020 subject to the fulfillment of certain continuing conditions. In fiscal 2017, 2016, and 2015, the preferential rate reduced income tax expense by approximately $21.6 million or $0.30 per share, $8.5 million or $0.12 per share and $5.9 million or $0.08 per share, respectively.

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OTHER FINANCIAL DATA (Notes)

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

OTHER FINANCIAL DATA

OTHER FINANCIAL DATA

The following table reflects other financial data for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Incentive compensation expense	$	29,612	$	14,661	$	10,768
Rent expense	$	5,071	$	5,901	$	5,006
Warranty and retrofit expense	$	12,219	$	4,599	$	2,808

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SEGMENT INFORMATION

12 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

Reportable segments are defined as components of an enterprise that engage in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and to assess performance. The Company's Chief Executive Officer is the Company's chief operating decision maker. The chief operating decision-maker does not review discrete asset information.

During the fourth quarter of fiscal 2017, we reorganized our reporting structure into two reportable segments consisting of: (i) Capital Equipment; and (ii) APS. As a result of this re-alignment, the Company has aggregated twelve operating segments as of September 30, 2017, with six operating segments within the Capital Equipment reportable segment and six operating segments in the APS reportable segment. Subsequently, we have recasted financial results for fiscal years 2017, 2016 and 2015 based on the revised segment structure. The change in the segments was a result of changes to our organizational structure initiated during the fourth quarter of fiscal 2017 to streamline business operations to improve profitability and competitiveness and reflects a change in the manner in which our chief operating decision maker reviews information to assess our performance and make decisions about resource allocation. As part of these actions, we transitioned to a new internal management structure whereby the operating management responsible for tools used to assemble semiconductor devices, including integrated circuits (“ICs”), high and low powered discrete devices, light-emitting diodes (“LEDs”) and power modules, services, spares, maintenance, repair and upgrading operating segments was brought under common leadership in the APS segment. The restructuring actions were completed during the fourth quarter of fiscal year 2017. Subsequent to the reorganization, the Capital Equipment segment comprises of the manufacturing and selling of ball bonders, wafer level bonders, wedge bonders, advanced packaging and electronic assembly solutions to semiconductor device manufacturers, IDMs, OSATs, other electronics manufacturers and automotive electronics suppliers. Our prior period reportable segment information has been recasted to reflect the current segment structure and conform to the current period presentation.

The following table reflects operating information by segment for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Net revenue:
Capital Equipment	$	651,934	$	488,925	$	411,099
APS	157,107		138,267		125,372
Net revenue	809,041		627,192		536,471
Income from operations:
Capital Equipment(1)	92,286		32,070		11,114
APS(2)	5,968		20,469		26,137
Income from operations	$	98,254	$	52,539	$	37,251

(1) Includes the restructuring expenses as discussed in Note 2, of $2.4 million, $6.2 million and $1.5 million for the years ended 2017, 2016 and 2015 respectively.

(2) Includes the restructuring expenses as discussed in Note 2, of $0.9 million, $2.4 million and $0.4 million for the years ended 2017, 2016 and 2015 respectively

The following tables reflect capital expenditures ,depreciation and amortization expense by segment for fiscal 2017, 2016 and 2015.

	Fiscal
(in thousands)	2017		2016		2015
Capital expenditures:
Capital Equipment	$	14,415	$	3,111	$	6,592
APS	11,273		3,190		2,927
Capital expenditures	$	25,688	$	6,301	$	9,519

	Fiscal
(in thousands)	2017		2016		2015
Depreciation expense:
Capital Equipment	$	6,306	$	6,012	$	6,075
APS	3,397		3,557		3,014
Depreciation expense	$	9,703	$	9,569	$	9,089

	Fiscal
(in thousands)	2017		2016		2015
Amortization expense:
Capital Equipment	$	2,841	$	2,760	$	4,291
APS	3,713		3,901		5,592
Amortization expense	$	6,554	$	6,661	$	9,883

Geographical information

The following tables reflect destination sales to unaffiliated customers by country and long-lived assets by country for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
China	$	323,803	$	211,448	$	169,557
Taiwan	100,738		129,128		56,610
Korea	73,410		70,593		40,687
Malaysia	72,329		42,368		48,825
United States	57,728		47,806		47,220
Philippines	25,165		8,272		42,575
Japan	21,224		28,256		31,413
All other	134,644		89,321		99,584
Total destination sales to unaffiliated customers	$	809,041	$	627,192	$	536,471

	Fiscal
(in thousands)	2017		2016		2015
Long-lived assets:
United States	$	43,440	$	18,570	$	7,429
Singapore	31,553		33,286		36,754
China	11,148		7,459		7,386
Israel	4,549		4,810		3,701
All other	6,899		5,295		3,084
Total long-lived assets	$	97,589	$	69,420	$	58,354

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Notes)

12 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS

COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS

Warranty Expense

The Company's equipment is generally shipped with a one-year warranty against manufacturing defects. The Company establishes reserves for estimated warranty expense when revenue for the related equipment is recognized. The reserve for estimated warranty expense is based upon historical experience and management's estimate of future warranty costs.

The following table reflects the reserve for product warranty activity for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017			2016			2015
Reserve for product warranty, beginning of period	$	4,138		$	1,856		$	1,542
Addition from business combination	—			—			547
Provision for product warranty	10,404			4,816			2,614
Product warranty costs paid	(2,709		)	(2,534		)	(2,847		)
Reserve for product warranty, end of period	$	11,833		$	4,138		$	1,856

Other Commitments and Contingencies

The following table reflects obligations not reflected on the Consolidated Balance Sheet as of September 30, 2017:

			Payments due by fiscal year
(in thousands)	Total		2018		2019		2020		2021		thereafter
Inventory purchase obligation (1)	$	106,084	$	106,084	$	—	$	—	$	—	$	—
Operating lease obligations (2)	19,958		3,781		2,879		2,556		1,841		8,901
Total	$	126,042	$	109,865	$	2,879	$	2,556	$	1,841	$	8,901

(1) The Company orders inventory components in the normal course of its business. A portion of these orders are non-cancelable and a portion may have varying penalties and charges in the event of cancellation.

(2) The Company has minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by the Company) primarily for various facility and equipment leases, which expire periodically through 2018 (not including lease extension options, if applicable).

Pursuant to ASC No. 840, Leases, for lessee's involvement in asset construction, the Company was considered the owner of the Building during the construction phase. The Building was completed on December 1, 2013 and Pte signed an agreement with the Landlord to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of the Building. Following the completion of construction, we performed a sale-leaseback analysis pursuant to ASC 840-40 and determined that because of our continuing involvement, ASC 840-40 precluded us from derecognizing the asset and associated financing obligation. As such, we reclassified the asset from construction in progress to Property, Plant and Equipment and began to depreciate the building over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. As of September 30, 2017, we recorded a financing obligation related to the Building of $16.8 million (see Note 10 above). The financing obligation is not reflected in the table above.

Concentrations

The following tables reflect significant customer concentrations as a percentage of net revenue for fiscal 2017, 2016, and 2015:

	Fiscal
	2017		2016		2015
Haoseng Industrial Co., Ltd	10.1	%	11.5	%	*

 * Represents less than 10% of net revenue

The following table reflects significant customer concentrations as a percentage of total accounts receivable as of September 30, 2017 and October 1, 2016:

	As of
	September 30, 2017		October 1, 2016
Haoseng Industrial Co., Ltd	26.2	%	20.8	%

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SELECTED QUARTERLY FINANCIAL RESULTS (Notes)

12 Months Ended

Sep. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

SELECTED QUARTERLY FINANCIAL RESULTS

SELECTED QUARTERLY FINANCIAL DATA (unaudited)

The following table reflects selected quarterly financial data for fiscal 2017 and 2016:

	Fiscal 2017 for the Quarter Ended
(in thousands, except per share amounts)	December 31			April 1		July 1			September 30			Fiscal 2017
Net revenue	$	149,639		$	199,613	$	243,897		$	215,892		$	809,041
Gross profit	68,318			90,291		111,698			104,739			375,046
Income from operations	17,281			32,605		11,464			36,904			98,254
Income tax expense / (benefit)	2,608			4,882		(17,867		)	2,242			(8,135		)
Net income	$	15,583		$	29,041	$	30,811		$	36,576		$	112,011
Net income per share (1):
Basic	$	0.22		$	0.41	$	0.43		$	0.52		$	1.58
Diluted	$	0.22		$	0.40	$	0.43		$	0.51		$	1.55
Weighted average shares outstanding:
Basic	70,854			70,964		71,063			70,742			70,906
Diluted	71,763			72,270		72,483			72,071			72,063
	Fiscal 2016 for the Quarter Ended
(in thousands, except per share amounts)	January 2			April 2		July 2			October 1			Fiscal 2016
Net revenue	$	108,534		$	156,400	$	216,414		$	145,844		$	627,192
Gross profit	50,421			69,647		100,040			66,621			286,729
Income from operations	(1,705		)	11,709		38,622			3,913			52,539
Income tax (benefit) / expense	(1,265		)	7,045		7,519			(5,661		)	7,638
Net income	$	(91	)	$	5,089	$	31,785		$	10,329		$	47,112
Net income per share (1):
Basic	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Diluted	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Weighted average shares outstanding:
Basic	70,738			70,389		70,379			70,404			70,477
Diluted	70,738			70,634		70,843			71,017			70,841

(1) EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

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SUBSEQUENT EVENTS (Notes)

12 Months Ended

Sep. 30, 2017

Subsequent Events [Abstract]

Subsequent Events [Text Block]

SUBSEQUENT EVENTS

On October 12, 2017, the Company entered into foreign exchange forward contracts with notional amounts of $12.7 million. We entered into these foreign exchange forward contracts to hedge a portion of our forecasted foreign currency-denominated expenses in the normal course of business and, accordingly, they are not speculative in nature. These foreign exchange forward contracts have maturities of up to twelve months

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Schedule II-Valuation and Qualifying Accounts

12 Months Ended

Oct. 01, 2016

Valuation and Qualifying Accounts [Abstract]

Schedule II-Valuation and Qualifying Accounts

KULICKE AND SOFFA INDUSTRIES, INC.

Schedule II-Valuation and Qualifying Accounts

Fiscal 2017:		Beginning of period		Charged to Costs and Expenses				Other Additions		Other Deductions				End of period
Allowance for doubtful accounts		$	506	$	(136	)		$	—	$	(291	)	(1)	$	79
Inventory reserve		$	21,080	$	10,925			$	—	$	(7,366	)	(2)	$	24,639
Valuation allowance for deferred taxes		$	27,381	$	—		(3)	$	2,233	$	—			$	29,614
Fiscal 2016:
Allowance for doubtful accounts		$	621	$	(115	)		$	—	$	—		(1)	$	506
Inventory reserve		$	19,073	$	6,676			$	—	$	(4,669	)	(2)	$	21,080
Valuation allowance for deferred taxes		$	23,128	$	563		(3)	$	3,690	$	—			$	27,381
Fiscal 2015:
Allowance for doubtful accounts		$	143	$	478			$	—	$	—		(1)	$	621
Inventory reserve		$	13,863	$	3,978			$	7,696	$	(6,464	)	(2)	$	19,073
Valuation allowance for deferred taxes		$	24,624	$	—		(3)	$	—	$	(1,496	)		$	23,128
(1)	Represents write-offs of specific accounts receivable.
(2)	Sale or scrap of previously reserved inventory.
(3)	Reflects increase/decrease in the valuation allowance primarily associated with the Company's U.S. and foreign net operating losses and other deferred tax assets.

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BASIS OF PRESENTATION (Policies)

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Consolidation

These consolidated financial statements include the accounts of Kulicke and Soffa Industries, Inc. and its subsidiaries (the “Company”), with appropriate elimination of intercompany balances and transactions.

Fiscal Year

Fiscal Year

Each of the Company's first three fiscal quarters ends on the Saturday that is 13 weeks after the end of the immediately preceding fiscal quarter. The fourth quarter of each fiscal year ends on the Saturday closest to September 30. In fiscal years consisting of 53 weeks, the fourth quarter will consist of 14 weeks. The 2017, 2016, and 2015 fiscal years ended on September 30, 2017, October 1, 2016 and October 3, 2015, respectively.

Nature of Business

Nature of Business

The Company designs, manufactures and sells capital equipment and tools as well as services, maintains, repairs and upgrades equipment, all used to assemble semiconductor devices. The Company's operating results depend upon the capital and operating expenditures of semiconductor device manufacturers, integrated device manufacturers, outsourced semiconductor assembly and test providers (“OSATs”), and other electronics manufacturers, including automotive electronics suppliers, worldwide which, in turn, depend on the current and anticipated market demand for semiconductors and products utilizing semiconductors. The semiconductor industry is highly volatile and experiences downturns and slowdowns which can have a severe negative effect on the semiconductor industry's demand for semiconductor capital equipment, including assembly equipment manufactured and sold by the Company and, to a lesser extent, tools, including those sold by the Company. These downturns and slowdowns have in the past adversely affected the Company's operating results. The Company believes such volatility will continue to characterize the industry and the Company's operations in the future.

Use of Estimates

Use of Estimates

The preparation of consolidated financial statements requires management to make assumptions, estimates and judgments that affect the reported amounts of assets and liabilities, net revenue and expenses during the reporting periods, and disclosures of contingent assets and liabilities as of the date of the consolidated financial statements. On an ongoing basis, management evaluates estimates, including but not limited to, those related to accounts receivable, reserves for excess and obsolete inventory, carrying value and lives of fixed assets, goodwill and intangible assets, valuation allowances for deferred tax assets and deferred tax liabilities, repatriation of un-remitted foreign subsidiary earnings, equity-based compensation expense, and warranties. Management bases its estimates on historical experience and on various other assumptions believed to be reasonable. As a result, management makes judgments regarding the carrying values of the Company's assets and liabilities that are not readily apparent from other sources. Authoritative pronouncements, historical experience and assumptions are used as the basis for making estimates, and on an ongoing basis, management evaluates these estimates. Actual results may differ from these estimates.

Vulnerability to Certain Concentrations

Vulnerability to Certain Concentrations

Financial instruments which may subject the Company to concentrations of credit risk as of September 30, 2017 and October 1, 2016 consisted primarily of trade receivables. The Company manages credit risk associated with investments by investing its excess cash in highly rated debt instruments of the U.S. Government and its agencies, financial institutions, and corporations. The Company has established investment guidelines relative to diversification and maturities designed to maintain safety and liquidity. These guidelines are periodically reviewed and modified as appropriate. The Company does not have any exposure to sub-prime financial instruments or auction rate securities.

The Company's trade receivables result primarily from the sale of semiconductor equipment, related accessories and replacement parts, and tools to a relatively small number of large manufacturers in a highly concentrated industry. Write-offs of uncollectible accounts have historically not been significant; however, the Company monitors its customers' financial strength to reduce the risk of loss.

The Company's products are complex and require raw materials, components and subassemblies having a high degree of reliability, accuracy and performance. The Company relies on subcontractors to manufacture many of these components and subassemblies and it relies on sole source suppliers for some important components and raw material inventory.

Foreign Currency Translation

Foreign Currency Translation and Remeasurement

The majority of the Company's business is transacted in U.S. dollars; however, the functional currencies of some of the Company's subsidiaries are their local currencies. In accordance with ASC No. 830, Foreign Currency Matters (“ASC 830”), for a subsidiary of the Company that has a functional currency other than the U.S. dollar, gains and losses resulting from the translation of the functional currency into U.S. dollars for financial statement presentation are not included in determining net income, but are accumulated in the cumulative translation adjustment account as a separate component of shareholders' equity (accumulated other comprehensive income / (loss)). Under ASC 830, cumulative translation adjustments are not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries. Gains and losses resulting from foreign currency transactions are included in the determination of net income.

The Company's operations are exposed to changes in foreign currency exchange rates due to transactions denominated in currencies other than the location's functional currency. The Company is also exposed to foreign currency fluctuations that impact the remeasurement of net monetary assets of those operations whose functional currency, the U.S. dollar, differs from their respective local currencies, most notably in Israel, Malaysia, Singapore and Switzerland. In addition to net monetary remeasurement, the Company has exposures related to the translation of subsidiary financial statements from their functional currency, the local currency, into its reporting currency, the U.S. dollar, most notably in Netherlands, China, Taiwan, Japan and Germany. The Company's U.S. operations also have foreign currency exposure due to net monetary assets denominated in currencies other than the U.S. dollar.

Derivatives, Methods of Accounting, Hedging Derivatives [Policy Text Block]

Derivative Financial Instruments

The Company’s primary objective for holding derivative financial instruments is to manage the fluctuation in foreign exchange rates and accordingly is not speculative in nature. The Company’s international operations are exposed to changes in foreign exchange rates as described above. The Company has established a program to monitor the forecasted transaction currency risk to protect against foreign exchange rate volatility. Generally, the Company uses foreign exchange forward contracts in these hedging programs. The instruments, which have maturities of up to twelve months, are recorded at fair value and are included in prepaid expenses and other current assets, or accrued expenses and other current liabilities.

Our accounting policy for derivative financial instruments is based on whether they meet the criteria for designation as a cash flow hedge. A designated hedge with exposure to variability in the functional currency equivalent of the future foreign currency cash flows of a forecasted transaction is referred to as a cash flow hedge. The criteria for designating a derivative as a cash flow hedge include the assessment of the instrument’s effectiveness in risk reduction, matching of the derivative instrument to its underlying transaction, and the assessment of the probability that the underlying transaction will occur. For derivatives with cash flow hedge accounting designation, we report the after-tax gain / (loss) from the effective portion of the hedge as a component of accumulated other comprehensive income / (loss) and reclassify it into earnings in the same period in which the hedged transaction affects earnings and in the same line item on the consolidated statement of operations as the impact of the hedged transaction. Derivatives that we designate as cash flow hedges are classified in the consolidated statement of cash flows in the same section as the underlying item, primarily within cash flows from operating activities.

The hedge effectiveness of these derivative instruments is evaluated by comparing the cumulative change in the fair value of the hedge contract with the cumulative change in the fair value of the forecasted cash flows of the hedged item.

If a cash flow hedge is discontinued because it is no longer probable that the original hedged transaction will occur as previously anticipated, the cumulative unrealized gain or loss on the related derivative is reclassified from accumulated other comprehensive income / (loss) into earnings. Subsequent gain / (loss) on the related derivative instrument is recognized into earnings in each period until the instrument matures, is terminated, is re-designated as a qualified cash flow hedge, or is sold. Ineffective portions of cash flow hedges, as well as amounts excluded from the assessment of effectiveness, are recognized in earnings.

Cash Equivalents

Cash Equivalents

The Company considers all highly liquid investments with original maturities of three months or less when purchased to be cash equivalents. Cash equivalents are measured at fair value based on level one measurement, or quoted market prices, as defined by ASC No. 820, Fair Value Measurements and Disclosures. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for cash equivalents.

Investments

Investments

Investments, other than cash equivalents, are classified as “trading,” “available-for-sale” or “held-to-maturity,” in accordance with ASC No. 320, Investments-Debt & Equity Securities, and depending upon the nature of the investment, its ultimate maturity date in the case of debt securities, and management's intentions with respect to holding the securities. Investments classified as “trading” are reported at fair market value, with unrealized gains or losses included in earnings. Investments classified as “available-for-sale” are reported at fair market value, with net unrealized gains or losses reflected as a separate component of shareholders' equity (accumulated other comprehensive income (loss)). The fair market value of trading and available-for-sale securities is determined using quoted market prices at the balance sheet date. Investments classified as held-to-maturity are reported at amortized cost. Realized gains and losses are determined on the basis of specific identification of the securities sold.

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

The Company maintains allowances for doubtful accounts for estimated losses resulting from its customers' failure to make required payments. If the financial condition of the Company's customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. The Company is also subject to concentrations of customers and sales to a few geographic locations, which could also impact the collectability of certain receivables. If global or regional economic conditions deteriorate or political conditions were to change in some of the countries where the Company does business, it could have a significant impact on the results of operations, and the Company's ability to realize the full value of its accounts receivable.

Inventories

Inventories

Inventories are stated at the lower of cost (on a first-in first-out basis) or net realizable value. The Company generally provides reserves for obsolete inventory and for inventory considered to be in excess of demand. Demand is generally defined as 18 months forecasted future consumption for equipment, 24 months forecasted future consumption for spare parts, and 12 months forecasted future consumption for tools. Forecasted consumption is based upon internal projections, historical sales volumes, customer order activity and a review of consumable inventory levels at customers' facilities. The Company communicates forecasts of its future consumption to its suppliers and adjusts commitments to those suppliers accordingly. If required, the Company reserves the difference between the carrying value of its inventory and the lower of cost or net realizable value, based upon projections about future consumption, and market conditions. If actual market conditions are less favorable than projections, additional inventory reserves may be required.

Inventory reserve provision for certain subsidiaries is determined based on management's estimate of future consumption for equipment and spare parts. This estimate is based on historical sales volumes, internal projections and market developments and trends.

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment are carried at cost. The cost of additions and those improvements which increase the capacity or lengthen the useful lives of assets are capitalized while repair and maintenance costs are expensed as incurred. Depreciation and amortization are provided on a straight-line basis over the estimated useful lives as follows: buildings 25 years; machinery, equipment, furniture and fittings 3 to 10 years; and leasehold improvements are based on the shorter of the life of lease or life of asset. Purchased computer software costs related to business and financial systems are amortized over a five-year period on a straight-line basis. Land is not depreciated.

Valuation of Long-Lived Assets

Valuation of Long-Lived Assets

In accordance with ASC No. 360, Property, Plant & Equipment ("ASC 360"), the Company's property, plant and equipment is tested for impairment based on undiscounted cash flows when triggering events occur, and if impaired, written-down to fair value based on either discounted cash flows or appraised values. ASC 360 also provides a single accounting model for long-lived assets to be disposed of by sale and establishes additional criteria that would have to be met to classify an asset as held for sale. The carrying amount of an asset or asset group is not recoverable to the extent it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset or asset group. Estimates of future cash flows used to test the recoverability of a long-lived asset or asset group must incorporate the entity's own assumptions about its use of the asset or asset group and must factor in all available evidence.

ASC 360 requires that long-lived assets be tested for recoverability whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. Such events include significant under-performance relative to historical internal forecasts or projected future operating results; significant changes in the manner of use of the assets; significant negative industry or economic trends; or significant changes in market capitalization. During the fiscal years ended September 30, 2017 and October 1, 2016, no "triggering" events occurred.

Accounting for Impairment of Goodwill

Accounting for Impairment of Goodwill

The Company operates two reportable segments: Capital Equipment and APS. Goodwill was recorded for the acquisitions of Orthodyne Electronics Corporation ("Orthodyne"), Assembléon B.V. ("Assembléon") and Liteq B.V. ("Liteq") in fiscal 2009, 2015 and 2017, respectively.

ASC No. 350, Intangibles-Goodwill and Other ("ASC 350") requires goodwill and intangible assets with indefinite lives to be reviewed for impairment annually, or more frequently if circumstances indicate a possible impairment. We assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, after assessing the qualitative factors, a company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying value, then performing the two-step impairment test is unnecessary. However, if a company concludes otherwise, then it is required to perform the first step of the two-step goodwill impairment test. If the carrying value of a reporting unit exceeds its fair value in the first step of the test, then a company is required to perform the second step of the goodwill impairment test to measure the amount of the reporting unit's goodwill impairment loss, if any. 

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. This ASU will be effective for us beginning in our first quarter of 2021 and early adoption is permitted. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04. This eliminates the requirement to perform step 2 of the goodwill impairment test.

In fiscal 2017 and 2016, the Company chose to bypass the qualitative assessment and proceed directly to performing the quantitative evaluation of the fair value of the reporting unit, to compare against the carrying value of the reporting unit.

As part of the annual evaluation, the Company performs an impairment test of its goodwill in the fourth quarter of each fiscal year to coincide with the completion of its annual forecasting and refreshing of its business outlook processes. On an ongoing basis, the Company monitors if a “triggering” event has occurred that may have the effect of reducing the fair value of a reporting unit below its respective carrying value. Adverse changes in expected operating results and/or unfavorable changes in other economic factors used to estimate fair values could result in a non-cash impairment charge in the future.

Impairment assessments inherently involve judgment as to the assumptions made about the expected future cash flows and the impact of market conditions on those assumptions. Future events and changing market conditions may impact the assumptions as to prices, costs, growth rates or other factors that may result in changes in the estimates of future cash flows. Although the Company believes the assumptions that it has used in testing for impairment are reasonable, significant changes in any one of the assumptions could produce a significantly different result. Indicators of potential impairment may lead the Company to perform interim goodwill impairment assessments, including significant and unforeseen customer losses, a significant adverse change in legal factors or in the business climate, a significant adverse action or assessment by a regulator, a significant stock price decline or unanticipated competition.

For further information on goodwill and intangible assets, see Note 5 below.

Revenue Recognition

Revenue Recognition

In accordance with ASC No. 605, Revenue Recognition, the Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, the collectability is reasonably assured, and customer acceptance, when applicable, has been received or we otherwise have been released from customer acceptance obligations. If terms of the sale provide for a customer acceptance period, revenue is recognized upon the expiration of the acceptance period or customer acceptance, whichever occurs first. Services revenue is generally recognized over the period that the services are provided.

Shipping and handling costs billed to customers are recognized in net revenue. Shipping and handling costs paid by the Company are included in cost of sales.

Research and Development

Research and Development

The Company charges research and development costs associated with the development of new products to expense when incurred. In certain circumstances, pre-production machines that the Company intends to sell are carried as inventory until sold.

Income Taxes

Income Taxes

In accordance with ASC No. 740, Income Taxes, deferred income taxes are determined using the balance sheet method. The Company records a valuation allowance to reduce its deferred tax assets to the amount it expects is more likely than not to be realized. While the Company has considered future taxable income and its ongoing tax planning strategies in assessing the need for the valuation allowance, if it were to determine that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, an adjustment to the deferred tax asset would increase income in the period when such determination is made. Likewise, should the Company determine it would not be able to realize all or part of its net deferred tax assets in the future, an adjustment to the deferred tax asset would decrease income in the period when such determination is made.

In accordance with ASC No. 740 Topic 10, Income Taxes, General (“ASC 740.10”), the Company accounts for uncertain tax positions taken or expected to be taken in its income tax return. Under ASC 740.10, the Company utilizes a two-step approach for evaluating uncertain tax positions. Step one, or recognition, requires a company to determine if the weight of available evidence indicates a tax position is more likely than not to be sustained upon examination solely based on its technical merit. Step two, or measurement, is based on the largest amount of benefit, which is more likely than not to be realized on settlement with the taxing authority, including resolution of related appeals or litigation processes, if any.

The Financial Accounting Standards Board ("FASB") has issued Accounting Standard Update ("ASU") 2015-17, Income Taxes (Topic 740), regarding the presentation of deferred income taxes. Under the new standard, both deferred tax liabilities and assets are required to be classified as noncurrent in a classified balance sheet. ASU 2015-17 will become effective for fiscal years, and the interim periods within those years, beginning after December 15, 2016 (our fiscal 2018), with early adoption allowed. During the first quarter of fiscal 2016, we elected to prospectively adopt ASU 2015-17, thus reclassifying current deferred taxes to noncurrent on the accompanying Consolidated Balance Sheet.

Equity-Based Compensation

Equity-Based Compensation

The Company accounts for equity-based compensation under the provisions of ASC No. 718, Compensation - Stock Compensation (“ASC 718”). ASC 718 requires the recognition of the fair value of the equity-based compensation in net income. Compensation expense associated with market-based restricted stock is determined using a Monte-Carlo valuation model, and compensation expense associated with time-based and performance-based restricted stock is determined based on the number of shares granted and the fair value on the date of grant. The fair value of the Company's stock option awards are estimated using a Black-Scholes option valuation model. In addition, the calculation of equity-based compensation costs requires that the Company estimate the number of awards that will be forfeited during the vesting period. The fair value of equity-based awards is amortized over the vesting period of the award and the Company elected to use the straight-line method for awards granted after the adoption of ASC 718.

Earnings per Share

Earnings per Share

Earnings per share (“EPS”) are calculated in accordance with ASC No. 260, Earnings per Share. Basic EPS include only the weighted average number of common shares outstanding during the period. Diluted EPS include the weighted average number of common shares and the dilutive effect of stock options, restricted stock and share unit awards and other convertible instruments outstanding during the period, when such instruments are dilutive.

In accordance with ASC No. 260.10.55, Earnings per Share - Implementation & Guidance, the Company treats all outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends as participating in undistributed earnings with common shareholders. Awards of this nature are considered participating securities and the two-class method of computing basic and diluted EPS must be applied.

Accounting for Business Acquisitions

Accounting for Business Acquisitions

The Company accounts for business acquisitions in accordance with ASC No. 805, Business Combinations. The fair value of the net assets acquired and the results of operations of the acquired businesses are included in the Consolidated Financial Statements from the acquisition date forward. The Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and results of operations during the reporting period. Estimates are used in accounting for, among other things, the fair value of acquired net operating assets, property and equipment, deferred revenue, intangible assets and related deferred tax liabilities, useful lives of plant and equipment, and amortizable lives of acquired intangible assets. Any excess of the purchase consideration over the identified fair value of the assets and liabilities acquired is recognized as goodwill. The valuation of these tangible and identifiable intangible assets and liabilities is subject to further management review and may change materially between the preliminary allocation and end of the purchase price allocation period.

Restructuring charges

Restructuring charges

Restructuring charges may consist of voluntary or involuntary severance-related charges, asset-related charges and other costs due to exit activities. We recognize voluntary termination benefits when an employee accepts the offered benefit arrangement. We recognize involuntary severance-related charges depending on whether the termination benefits are provided under an ongoing benefit arrangement or under a one-time benefit arrangement. If the former, we recognize the charges once they are probable and the amounts are estimable. If the latter, we recognize the charges once the benefits have been communicated to employees.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Restricted Cash

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the FASB Emerging Issues Task Force). This update requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. This ASU will be effective for us beginning in our first quarter of 2019. Early adoption is permitted beginning in our first quarter of fiscal 2018. We do not expect the adoption of the ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Income Taxes

In October 2016, the FASB issued ASU 2016-16, Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory. The new guidance requires the tax effects of intercompany transactions (other than transfers of inventory) to be recognized currently. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2017 (our fiscal 2019), including interim periods within those years, with an option to early adopt. The modified retrospective approach will be required for transition to the new guidance, with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the balance of intellectual property transferred between our subsidiaries as of the adoption date. We are currently evaluating the timing of the adoption of this ASU.

Stock Compensation

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures recognized as they occur, as well as certain classifications on the statement of cash flows. This ASU will be effective for us beginning in our first quarter of fiscal 2018. In the year of adoption, the Company anticipates we will recognize unrealized excess tax benefits of $5.4 million in retained earnings.

In May 2017, the FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. This ASU specifies the modification accounting applicable to any entity which changes the terms or conditions of a share-based payment award. This ASU will be effective for us beginning in our first quarter of fiscal 2019. Early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under current GAAP. This ASU will be effective for us beginning in our first quarter of fiscal 2020 and early adoption is permitted. The adoption of this ASU will result in an increase to our consolidated balance sheets for these right of use assets and corresponding liabilities. However, the ultimate impact of adopting this ASU will depend on the Company's lease portfolio as of the adoption date. We are currently evaluating the timing and other effects of the adoption of this ASU on our financial statements.

Financial Instruments

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU replaces the impairment methodology in current GAAP, which delays recognition of credit losses until it is probable a loss has been incurred, with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU will be effective for us beginning in our first quarter of fiscal 2020. Early adoption is permitted beginning in our first quarter of 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

Derivatives and Hedging

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (Topic 815). The new guidance expands and refines hedge accounting for both financial and non-financial risks. The new guidance also modifies disclosure requirements for hedging activities. The new guidance will be effective for us beginning in our first quarter of fiscal 2020, and early adoption is permitted in any interim period. The Company is currently evaluating the impact of the new guidance on its consolidated financial statements as well as whether to adopt the new guidance early.

Business Combinations

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The new guidance provides a new framework for determining whether business development transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This ASU will be effective for us beginning in our first quarter of 2019. Earlier application is permitted for acquisition or derecognition events that occurred prior to issuance date or effective date of the guidance only when the transaction has not been reported in financial statements that have been issued or made available for issuance. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. We are currently evaluating the timing of the adoption of this ASU.

Intangibles—Goodwill and Other

In January 2017, the FASB issued ASU 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The new guidance eliminates the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. Under the new guidance the goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and recognizing an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, although it cannot exceed the total amount of goodwill allocated to that reporting unit. During the third quarter of 2017, we elected to prospectively adopt ASU2017-04.

Statement of Cash Flows

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the classification of certain specific cash flow issues including debt prepayment or extinguishment costs, settlement of certain debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of certain insurance claims and distributions received from equity method investees. This ASU will be effective for us beginning in our first quarter of 2019 and early adoption is permitted. We do not expect the adoption of this ASU itself to have a material impact on our financial statements.

Revenue Recognition

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled when products are transferred to customers.

Subsequently, the FASB has issued the following standards related to ASU 2014-09: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (“ASU 2016-08”); ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing (“ASU 2016-10”); ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients (“ASU 2016-12”); and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers (“ASU 2016-20”). The Company must adopt ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20 with ASU 2014-09 (collectively, the “new revenue standards”).

The new revenue standards may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The new standard is effective for annual reporting periods beginning after December 15, 2017. The new standard permits companies to early adopt the new standard, but not before annual reporting periods beginning after December 15, 2016. The Company will not early adopt the new standard and therefore the new standard will be effective for the Company in the first quarter of its fiscal 2019. We have made progress in our review of the impact of this guidance on revenue related activities, and are monitoring additional changes, modifications, clarifications or interpretations undertaken by the FASB. We do not expect the adoption of this ASU itself to have a material impact on our financial statements. However, the ultimate impact of adopting this ASU will depend on the Company's revenue portfolio as of the adoption date.

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RESTRUCTURING (Tables)

12 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

The following table is a summary of activity related to the Company’s restructuring and other charges for fiscal 2017, 2016, and 2015:

	Fiscal Year 2017 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	37	$	3,273	$	(418	)	$	2,892
Other exit costs	6,525		38		(4,827		)	1,736
	6,562		3,311		(5,245		)	4,628

	Fiscal Year 2016 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	1,538	$	661	$	(2,162	)	$	37
Other exit costs	—		7,983		(1,458		)	6,525
	1,538		8,644		(3,620		)	6,562

	Fiscal Year 2015 Activity
(in thousands)	Beginning of period (1)		Expenses (2)		Payments			End of period (1)
Severance and benefits	$	—	$	1,850	$	(312	)	$	1,538

(1) Included within accrued expenses and other current liabilities on the Consolidated Balance Sheets.

(2) Provision for severance and benefits and other exit costs are included within selling, general and administrative expenses on the Consolidated Statements of Operations.

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BALANCE SHEET COMPONENTS (Tables)

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of significant balance sheet accounts

The following tables reflect the components of significant balance sheet accounts as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017			October 1, 2016
Short term investments, available-for-sale(1)	$	216,000		$	124,000
Inventories, net:
Raw materials and supplies (2)	$	44,239		$	26,876
Work in process (2)	40,827			24,333
Finished goods (2)	61,596			57,166
	146,662			108,375
Inventory reserves	(24,639		)	(21,080		)
	$	122,023		$	87,295
Property, plant and equipment, net:
Land	$	2,182		$	—
Buildings and building improvements	50,910			34,472
Leasehold improvements	9,882			19,963
Data processing equipment and software (2)	34,700			32,975
Machinery, equipment, furniture and fixtures	68,143			54,730
	165,817			142,140
Accumulated depreciation(2)	(98,055		)	(91,798		)
	$	67,762		$	50,342
Accrued expenses and other current liabilities:
Wages and benefits	$	47,411		$	24,248
Accrued customer obligations (3)	50,497			13,077
Commissions and professional fees	8,555			10,908
Deferred rent	1,930			2,920
Severance (4)	3,828			1,296
Other	20,093			11,505
	$	132,314		$	63,954

(1) All short-term investments were classified as available-for-sale and were measured at fair value based on level one measurement, or quoted market prices, as defined by ASC 820. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for short-term investments. The Company did not recognize any realized gains or losses on the sale of investments during the years ended 2017 and 2016.

(2) Certain balances as at October 1, 2016 relating to Inventories and Property, plant and equipment have been reclassified for comparative purposes. These reclassifications have no impact to the Consolidated Balance Sheets as at October 1, 2016.

(3) Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

(4) Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.2 million (as of Oct 1, 2016: $0.8 million), and other severance payments which are not part of the Company's plan to streamline its global operations and functions.

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BUSINESS COMBINATION (Tables)

12 Months Ended

Sep. 30, 2017

Oct. 03, 2015

Liteq B.V. [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	July 2, 2017
Prepaid expenses and other current assets	$	199
Property, plant and equipment	107
Intangibles	18,060
Goodwill	10,253
Accounts payable	(157		)
Accrued expenses and other current liabilities	(103		)
Deferred tax liabilities	(1,240		)
Total purchase price, net of cash acquired	$	27,119

Business Acquisition, Pro Forma Information [Table Text Block]

	Fiscal
(in thousands, except for per share information)	2017		2016
Revenue	$	809,041	$	627,192
Net income / (loss)	105,966		41,186
Basic income per common share	1.49		0.58
Diluted income per common share	$	1.47	$	0.58

Assembléon [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table summarizes the allocation of the assets acquired and liabilities assumed based on the fair values as of the acquisition date and related useful lives of the finite-lived intangible assets acquired:

(in thousands)	January 9, 2015
Accounts receivable	$	9,941
Inventories	19,861
Prepaid expenses and other current assets	2,322
Deferred tax asset	157
Property, plant and equipment	531
Intangibles	61,463
Goodwill	39,726
Deferred income taxes	638
Accounts payable	(14,386		)
Borrowings financial institutions	(9,491		)
Accrued expenses and other current liabilities	(10,561		)
Income taxes payable	(1,933		)
Deferred tax liabilities	(5,115		)
Total purchase price, net of cash acquired	$	93,153

Business Acquisition, Pro Forma Information [Table Text Block]

	Fiscal
(in thousands)	2015
Revenue	$	562,754
Net income / (loss)	45,303
Basic income per common share	0.60
Diluted income per common share	0.60

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GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the Company's recorded goodwill by reportable segments as of September 30, 2017 and October 1, 2016:

(in thousands)	Capital Equipment			APS			Total
Balance at October 3, 2015 and October 1, 2016 (1)	$	33,453		$	47,819		$	81,272
Acquired in business combination	10,253			—			10,253
Goodwill impairment	(13,731		)	(21,476		)	(35,207		)
Balance at September 30, 2017	$	29,975		$	26,343		$	56,318

(1) Balances have been recasted due to the operating and reportable segments realignment.

Net intangible assets

The following table reflects net intangible assets as of September 30, 2017 and October 1, 2016: 

	As of						Average estimated
(dollar amounts in thousands)	September 30, 2017			October 1, 2016			useful lives (in years)
Developed technology	$	74,080		$	74,080		7.0 to 15.0
Acquired in business combination	18,060			—
Accumulated amortization	(41,162		)	(37,969		)
Net developed technology	$	50,978		$	36,111
Customer relationships	$	36,968		$	36,968		5.0 to 6.0
Accumulated amortization	(27,398		)	(24,455		)
Net customer relationships	$	9,570		$	12,513
Trade and brand names	$	7,515		$	7,515		7.0 to 8.0
Accumulated amortization	(5,747		)	(5,329		)
Net trade and brand names	$	1,768		$	2,186
Other intangible assets	$	2,500		$	2,500		1.9
Accumulated amortization	(2,500		)	(2,500		)
Net wedge bonder other intangible assets	$	—		$	—
Net intangible assets	$	62,316		$	50,810

Estimated annual amortization expense related to intangible assets

The following table reflects estimated annual amortization expense related to intangible assets as of September 30, 2017:

	As of
(in thousands)	September 30, 2017
Fiscal 2018	$	7,892
Fiscal 2019	7,892
Fiscal 2020	7,892
Fiscal 2021	5,684
Fiscal 2022 and thereafter	32,956
Total amortization expense	$	62,316

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CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS (Tables)

12 Months Ended

Sep. 30, 2017

Cash and Cash Equivalents [Abstract]

Cash, cash equivalents and short-term investments [Table Text Block]

Cash, cash equivalents, restricted cash and short-term investments consisted of the following as of September 30, 2017:

	As of
(dollar amounts in thousands)	September 30, 2017		October 1, 2016
Current assets:
Cash	$	65,759	$	118,335
Cash equivalents (1):
Money market funds	232,069		152,961
Time deposits (3)	89,087		133,611
Commercial paper	5,495		19,000
Total cash and cash equivalents	$	392,410	$	423,907
Restricted Cash (1)	$	530	$	—
Total restricted cash	$	530	$	—
Short-term investments (1):
Time deposits (3)	$	120,000	$	124,000
Deposits (2)	96,000		—
Total short-term investments	$	216,000	$	124,000
Total cash, cash equivalents, restricted cash and short-term investments	$	608,940	$	547,907

(1) Fair value approximates cost basis.

(2) Represents deposits that require a notice period of three months for withdrawal.

(3) Certain time deposits as at October 1, 2016 have been corrected from cash equivalents to short-term investments for comparative purposes.

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EQUITY INVESTMENTS (Tables)

12 Months Ended

Sep. 30, 2017

Schedule of Equity Method Investments [Line Items]

Equity Method Investments [Table Text Block]

Equity investments consisted of the following as of September 30, 2017 and October 1, 2016:

	As of
(in thousands)	September 30, 2017		October 1, 2016
Equity method investment	$	1,502	$	—

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DERIVATIVE FINANCIAL INSTRUMENT (Tables)

12 Months Ended

Sep. 30, 2017

Derivative financial Instruments [Abstract]

Schedule of Fair Value of Derivative Instruments on Balance Sheet

The fair value of derivative instruments on our Consolidated Balance Sheet as of September 30, 2017 and October 1, 2016 is as follows:

	As of
(in thousands)	September 30, 2017				October 1, 2016
	Notional Amount		Fair Value Asset Derivatives(1)		Notional Amount		Fair Value Liability Derivatives(2)
Derivatives designated as hedging instruments:
Foreign exchange forward contracts (2)	$	36,404	$	1,353	$	28,997	$	462
Total derivatives	$	36,404	$	1,353	$	28,997	$	462

(1) The fair value of derivative assets is measured using level 2 fair value inputs and is included in prepaid expenses and other current assets on our Consolidated Balance Sheet.

(2) The fair value of derivative liabilities is measured using level 2 fair value inputs and is included in accrued expenses and other current liabilities on our Consolidated Balance Sheet.

(3) Hedged amounts expected to be recognized to income within the next twelve months.

Derivative Instruments, Gain (Loss) [Table Text Block]

The effect of derivative instruments designated as cash flow hedges in our Consolidated Statements of Operations for the year ended September 30, 2017 and October 1, 2016 was as follows:

(in thousands)	Fiscal
	2017			2016
Foreign exchange forward contract in cash flow hedging relationships:
Net gain / (loss) recognized in OCI, net of tax(1)	$	669		$	(566	)
Net (loss) / gain reclassified from accumulated OCI into income, net of tax(2)	$	(1,146	)	$	(104	)
Net gain recognized in income(3)	$	—		$	—

(1) Net change in the fair value of the effective portion classified in other comprehensive income (“OCI”).

(2) Effective portion classified as selling, general and administrative expense.

(3) Ineffective portion and amount excluded from effectiveness testing classified in selling, general and administrative expense.

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Company’s matching contributions to the Plan

The following table reflects the Company’s contributions to the Plans during fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017		2016
Cash	$	1,645	$	1,544

Accumulated other comprehensive income reflected on the Consolidated Balance Sheets

The following table reflects accumulated other comprehensive (loss) / income reflected on the Consolidated Balance Sheets as of September 30, 2017 and October 1, 2016: 

	As of
(in thousands)	September 30, 2017			October 1, 2016
Gain from foreign currency translation adjustments	$	2,422		$	462
Unrecognized actuarial loss on pension plan, net of tax	(1,736		)	(2,726		)
Unrealized gain / (loss) on hedging	1,353			(462		)
Accumulated other comprehensive income/(loss)	$	2,039		$	(2,726	)

Equity-based compensation expense

The following table reflects total equity-based compensation expense, which includes restricted stock, stock options and common stock, included in the Consolidated Statements of Operations for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Cost of sales	$	463	$	421	$	393
Selling, general and administrative (1)	9,015		3,244		9,127
Research and development	2,244		2,065		2,469
Total equity-based compensation expense	$	11,722	$	5,730	$	11,989

(1) The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

The following table reflects equity-based compensation expense, by type of award, for fiscal 2017, 2016, and 2015:  

	Fiscal
(in thousands)	2017		2016			2015
Market-based restricted stock	$	3,480	$	(33	)	$	4,677
Time-based restricted stock	7,492		5,255			6,129
Performance-based restricted stock	—		(43		)	131
Stock options	—		—			3
Common stock	750		551			1,049
Total equity-based compensation expense (1)	$	11,722	$	5,730		$	11,989

(1) The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

Employee market-based restricted stock activity

The following table reflects employee market-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Market-based restricted stock outstanding as of September 27, 2014	1,068		$	5,271	1.0
Granted	232					$	16.83
Forfeited or expired	(48	)
Vested	(674	)
Market-based restricted stock outstanding as of October 3, 2015	578		$	4,465	1.4
Granted	172					$	12.26
Forfeited or expired	(256	)
Vested	(10	)
Market-based restricted stock outstanding as of October 1, 2016	484		$	2,924	1.0
Granted	388					$	13.47
Forfeited or expired	(3	)
Vested	(196	)
Market-based restricted stock outstanding as of September 30, 2017	673		$	6,204	1.4

Schedule of Assumptions Used to Calculate Compensation Expense

The following table reflects the assumptions used to calculate compensation expense related to the Company’s market-based restricted stock issued during fiscal 2017, 2016, and 2015:

	Fiscal
	2017			2016			2015
Grant Price	$	12.51		$	9.58		$	14.02
Expected dividend yield	N/A			N/A			N/A
Expected stock price volatility	30.39		%	30.85		%	35.48		%
Risk-free interest rate	0.96		%	0.89		%	0.89		%

Employee time-based restricted stock activity

The following table reflects employee time-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)	Weighted average grant date fair value per share
Time-based restricted stock outstanding as of September 27, 2014	1,057		$	6,720	1.4
Granted	484					$	14.06
Forfeited or expired	(29	)
Vested	(663	)
Time-based restricted stock outstanding as of October 3, 2015	849		$	7,054	1.6
Granted	597					$	9.66
Forfeited or expired	(85	)
Vested	(346	)
Time-based restricted stock outstanding as of October 1, 2016	1,015		$	6,440	1.5
Granted	715					$	13.32
Forfeited or expired	(50	)
Vested	(600	)
Time-based restricted stock outstanding as of 30 September 2017	1,080		$	7,770	1.5

Schedule Of Performance Based Restricted Stock Activity

The following table reflects employee performance-based restricted stock activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Unrecognized compensation expense (in thousands)		Average remaining service period (in years)
Performance-based restricted stock outstanding as of September 27, 2014	57		$	419	3.2
Granted	—
Performance-based restricted stock outstanding as of October 3, 2015	57		$	285	2.2
Granted	—
Forfeited or expired	(29	)
Vested	(28	)
Performance-based restricted stock outstanding as of October 1, 2016	—		—		0
Granted	—
Forfeited or expired	—
Vested	—
Performance-based restricted stock outstanding as of September 30, 2017	—		$	—	—

Employee stock option activity

The following table reflects employee stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	220		$	8.14
Exercised	(45	)	$	8.58		$	282
Forfeited or expired	(28	)	$	7.25
Options outstanding as of October 3, 2015	147		$	8.18
Exercised	(53	)	$	5.40		$	330
Forfeited or expired	(4	)	$	9.00
Options outstanding as of October 1, 2016	90		$	8.41
Exercised	(61	)	$	8.31		$	531
Forfeited or expired	(13	)	$	8.50
Options outstanding as of September 30, 2017	16		$	8.73	0.3	$	200
Options vested and expected to vest as of September 30, 2017	16		$	8.73	0.3	$	200
Options exercisable as of September 30, 2017	16		$	8.73	0.3
In the money exercisable options as of September 30, 2017	16					$	200

Outstanding and exercisable employee stock options

The following table reflects outstanding and exercisable employee stock options as of September 30, 2017:

	Options Outstanding				Options Exercisable
Range of exercise prices	Options outstanding (in thousands)	Weighted average remaining contractual life (in years)	Weighted average exercise price		Options exercisable (in thousands)	Weighted average exercise price
8.64 - 8.74	16	0.3	$	8.73	16	$	8.73

Common stock issued to non-employee directors

The following table reflects shares of common stock issued to non-employee directors and the corresponding fair value for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Number of common shares issued	45		50		83
Fair value based upon market price at time of issue	$	750	$	551	$	1,049

Non-employee director stock option activity

The following table reflects non-employee director stock option activity for fiscal 2017, 2016, and 2015:

	Number of shares (in thousands)		Weighted average exercise price		Average remaining contractual life (in years)	Aggregate intrinsic value (in thousands)
Options outstanding as of September 27, 2014	55		$	10.22		$	225
Exercised	(30	)	$	10.19
Forfeited or expired	(5	)	$	6.48
Options outstanding as of October 3, 2015	20		$	11.20		$	225
Exercised	—		$	—
Forfeited or expired	(20	)	$	11.00
Options outstanding as of October 1, 2016	—		$	—	—	$	—
Exercised	—		$	—
Forfeited or expired	—		$	—
Options outstanding as of September 30, 2017	—		$	—	—	$	—
Options vested and expected to vest as of September 30, 2017	—		$	—	—	$	—
Options exercisable as of September 30, 2017	—		$	—	—
In the money exercisable options as of September 30, 2017	—					$	—

No non-employee director stock options were granted during fiscal 2017, 2016, and 2015.

Defined benefits pension obligations and pension expenses

The following table reflects the Company's defined benefits pension obligations as of September 30, 2017 and October 1, 2016:

		As of
(in thousands)		September 30, 2017		October 1, 2016
Switzerland pension obligation		$	1,951	$	2,393
Taiwan pension obligation		967		925
	Total pension obligation	$	2,918	$	3,318

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EARNINGS PER SHARE (Tables)

12 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Reconciliation of shares used in the basic and diluted net income per share computation

The following tables reflect a reconciliation of the shares used in the basic and diluted net income per share computation for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands, except per share)	2017					2016				2015
	Basic		Diluted			Basic		Diluted		Basic		Diluted
NUMERATOR:
Net income	$	112,011	$	112,011		$	47,112	$	47,112	$	50,639	$	50,639
DENOMINATOR:
Weighted average shares outstanding - Basic	70,906		70,906			70,477		70,477		75,414		75,414
Stock options			19					32				70
Time-based restricted stock			592					274				175
Market-based restricted stock			546					58				—
Weighted average shares outstanding - Diluted			72,063					70,841				75,659
EPS:
Net income per share - Basic	$	1.58	$	1.58		$	0.67	$	0.67	$	0.67	$	0.67
Effect of dilutive shares			$	(0.03	)			$	—			$	—
Net income per share - Diluted			$	1.55				$	0.67			$	0.67

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INCOME TAXES (Tables)

12 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income from continuing operations by location, the provision (benefit) for income taxes and the effective tax rate

The following table reflects income or losses from continuing operations by location, the provision for income taxes and the effective tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(dollar amounts in thousands)	2017			2016			2015
United States operations	$	(4,114	)	$	(12,600	)	$	4,178
Foreign operations	107,800			67,350			33,527
Income from operations before tax	103,686			54,750			37,705
Income tax (benefit) / expenses	$	(8,135	)	$	7,638		$	(12,934	)
Effective tax rate	(7.8		)%	14.0		%	(34.3		)%

Provision (benefit) for income taxes from continuing operations

The following table reflects the provision for income taxes from continuing operations for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Current:
Federal	$	(3,975	)	$	871		$	1,459
State	64			53			76
Foreign	13,290			21,841			4,707
Deferred:
Federal	(15,374		)	(13,423		)	(20,250		)
State	40			12			(10		)
Foreign	(2,180		)	(1,716		)	1,084
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

Effective income tax rate reconciliation

The following table reflects the difference between the provision for income taxes and the amount computed by applying the statutory federal income tax rate for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Computed income tax expense based on U.S. statutory rate	$	36,290		$	19,163		$	13,197
Effect of earnings of foreign subsidiaries subject to different tax rates	(20,226		)	(7,330		)	(6,103		)
Benefits from foreign approved enterprise zones	(21,556		)	(8,531		)	(5,855		)
Benefits from research and development tax credits	(1,859		)	(2,839		)	(4,090		)
Benefits from foreign tax credits	(26,119		)	—			—
Change in permanent reinvestment assertion	—			(9,696		)	(19,704		)
Tax impact on restructuring	—			4,238			—
Tax audit settlement	—			4,889			—
Effect of permanent items	778			(2,274		)	1,822
Non-deductible goodwill impairment	8,805			—			—
Deferred taxes not benefited	6,458			3,585			2,634
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings)	6,039			4,981			4,904
Reserve for uncertain tax positions	2,936			208			886
State income tax expense (net of federal benefit)	60			996			(1,543		)
Other, net	259			248			918
Provision for income taxes	$	(8,135	)	$	7,638		$	(12,934	)

Net deferred tax balance

The following table reflects the net deferred tax balance, composed of the tax effects of cumulative temporary differences for fiscal 2017 and 2016:

	Fiscal
(in thousands)	2017			2016
Inventory reserves	$	589		$	546
Stock options	422			647
Other accruals and reserves	8,230			4,937
Domestic tax credit carryforwards	17,635			8,011
Net operating loss carryforwards	35,937			31,817
	$	62,813		$	45,958
Valuation allowance	$	(29,614	)	$	(27,381	)
Total long-term deferred tax asset	$	33,199		$	18,577
Foreign withholding tax on undistributed earnings	$	20,945		$	20,119
Fixed and intangible assets	11,262			9,333
Total long-term deferred tax liability	$	32,207		$	29,452
Total net deferred tax asset / (liability)	$	992		$	(10,875	)
Reported as
Deferred tax asset	$	27,771		$	16,822
Deferred tax liability	26,779			27,697
Total net deferred tax asset / (liability)	$	992		$	(10,875	)

Unrecognized tax benefits

The beginning and ending balances of the Company's unrecognized tax benefits are reconciled below for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017			2016			2015
Unrecognized tax benefit, beginning of year	$	7,453		$	7,101		$	7,192
Additions for tax positions, current year	3,657			519			—
Additions for tax positions, prior year	1,834			827			5,140
Reductions for tax positions, prior year	(882		)	(994		)	(5,231		)
Unrecognized tax benefit, end of year	$	12,062		$	7,453		$	7,101

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OTHER FINANCIAL DATA (Tables)

12 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Additional Financial Information Disclosure [Table Text Block]

The following table reflects other financial data for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
Incentive compensation expense	$	29,612	$	14,661	$	10,768
Rent expense	$	5,071	$	5,901	$	5,006
Warranty and retrofit expense	$	12,219	$	4,599	$	2,808

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SEGMENT INFORMATION (Tables)

12 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Operating information by segment

The following table reflects operating information by segment for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017		2016		2015
Net revenue:
Capital Equipment	$	651,934	$	488,925	$	411,099
APS	157,107		138,267		125,372
Net revenue	809,041		627,192		536,471
Income from operations:
Capital Equipment(1)	92,286		32,070		11,114
APS(2)	5,968		20,469		26,137
Income from operations	$	98,254	$	52,539	$	37,251

(1) Includes the restructuring expenses as discussed in Note 2, of $2.4 million, $6.2 million and $1.5 million for the years ended 2017, 2016 and 2015 respectively.

(2) Includes the restructuring expenses as discussed in Note 2, of $0.9 million, $2.4 million and $0.4 million for the years ended 2017, 2016 and 2015 respectively

Capital expenditures and depreciation expense

The following tables reflect capital expenditures ,depreciation and amortization expense by segment for fiscal 2017, 2016 and 2015.

	Fiscal
(in thousands)	2017		2016		2015
Capital expenditures:
Capital Equipment	$	14,415	$	3,111	$	6,592
APS	11,273		3,190		2,927
Capital expenditures	$	25,688	$	6,301	$	9,519

	Fiscal
(in thousands)	2017		2016		2015
Depreciation expense:
Capital Equipment	$	6,306	$	6,012	$	6,075
APS	3,397		3,557		3,014
Depreciation expense	$	9,703	$	9,569	$	9,089

	Fiscal
(in thousands)	2017		2016		2015
Amortization expense:
Capital Equipment	$	2,841	$	2,760	$	4,291
APS	3,713		3,901		5,592
Amortization expense	$	6,554	$	6,661	$	9,883

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SEGMENT INFORMATION Revenue by country (Tables)

12 Months Ended

Sep. 30, 2017

Revenues from External Customers and Long-Lived Assets [Line Items]

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

The following tables reflect destination sales to unaffiliated customers by country and long-lived assets by country for fiscal 2017, 2016, and 2015:

	Fiscal
(in thousands)	2017		2016		2015
China	$	323,803	$	211,448	$	169,557
Taiwan	100,738		129,128		56,610
Korea	73,410		70,593		40,687
Malaysia	72,329		42,368		48,825
United States	57,728		47,806		47,220
Philippines	25,165		8,272		42,575
Japan	21,224		28,256		31,413
All other	134,644		89,321		99,584
Total destination sales to unaffiliated customers	$	809,041	$	627,192	$	536,471

	Fiscal
(in thousands)	2017		2016		2015
Long-lived assets:
United States	$	43,440	$	18,570	$	7,429
Singapore	31,553		33,286		36,754
China	11,148		7,459		7,386
Israel	4,549		4,810		3,701
All other	6,899		5,295		3,084
Total long-lived assets	$	97,589	$	69,420	$	58,354

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Tables)

12 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Reserve for product warranty activity

The following table reflects the reserve for product warranty activity for fiscal 2017, 2016, and 2015: 

	Fiscal
(in thousands)	2017			2016			2015
Reserve for product warranty, beginning of period	$	4,138		$	1,856		$	1,542
Addition from business combination	—			—			547
Provision for product warranty	10,404			4,816			2,614
Product warranty costs paid	(2,709		)	(2,534		)	(2,847		)
Reserve for product warranty, end of period	$	11,833		$	4,138		$	1,856

Obligations not reflected on the Consolidated Balance Sheet

The following table reflects obligations not reflected on the Consolidated Balance Sheet as of September 30, 2017:

			Payments due by fiscal year
(in thousands)	Total		2018		2019		2020		2021		thereafter
Inventory purchase obligation (1)	$	106,084	$	106,084	$	—	$	—	$	—	$	—
Operating lease obligations (2)	19,958		3,781		2,879		2,556		1,841		8,901
Total	$	126,042	$	109,865	$	2,879	$	2,556	$	1,841	$	8,901

(1) The Company orders inventory components in the normal course of its business. A portion of these orders are non-cancelable and a portion may have varying penalties and charges in the event of cancellation.

(2) The Company has minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by the Company) primarily for various facility and equipment leases, which expire periodically through 2018 (not including lease extension options, if applicable).

Pursuant to ASC No. 840, Leases, for lessee's involvement in asset construction, the Company was considered the owner of the Building during the construction phase. The Building was completed on December 1, 2013 and Pte signed an agreement with the Landlord to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of the Building. Following the completion of construction, we performed a sale-leaseback analysis pursuant to ASC 840-40 and determined that because of our continuing involvement, ASC 840-40 precluded us from derecognizing the asset and associated financing obligation. As such, we reclassified the asset from construction in progress to Property, Plant and Equipment and began to depreciate the building over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. As of September 30, 2017, we recorded a financing obligation related to the Building of $16.8 million (see Note 10 above). The financing obligation is not reflected in the table above.

Significant customer concentrations as a percentage of net revenue

The following tables reflect significant customer concentrations as a percentage of net revenue for fiscal 2017, 2016, and 2015:

	Fiscal
	2017		2016		2015
Haoseng Industrial Co., Ltd	10.1	%	11.5	%	*

 * Represents less than 10% of net revenue

Significant customer concentrations as a percentage of total accounts receivable

The following table reflects significant customer concentrations as a percentage of total accounts receivable as of September 30, 2017 and October 1, 2016:

	As of
	September 30, 2017		October 1, 2016
Haoseng Industrial Co., Ltd	26.2	%	20.8	%

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SELECTED QUARTERLY FINANCIAL RESULTS (Tables)

12 Months Ended

Sep. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The following table reflects selected quarterly financial data for fiscal 2017 and 2016:

	Fiscal 2017 for the Quarter Ended
(in thousands, except per share amounts)	December 31			April 1		July 1			September 30			Fiscal 2017
Net revenue	$	149,639		$	199,613	$	243,897		$	215,892		$	809,041
Gross profit	68,318			90,291		111,698			104,739			375,046
Income from operations	17,281			32,605		11,464			36,904			98,254
Income tax expense / (benefit)	2,608			4,882		(17,867		)	2,242			(8,135		)
Net income	$	15,583		$	29,041	$	30,811		$	36,576		$	112,011
Net income per share (1):
Basic	$	0.22		$	0.41	$	0.43		$	0.52		$	1.58
Diluted	$	0.22		$	0.40	$	0.43		$	0.51		$	1.55
Weighted average shares outstanding:
Basic	70,854			70,964		71,063			70,742			70,906
Diluted	71,763			72,270		72,483			72,071			72,063
	Fiscal 2016 for the Quarter Ended
(in thousands, except per share amounts)	January 2			April 2		July 2			October 1			Fiscal 2016
Net revenue	$	108,534		$	156,400	$	216,414		$	145,844		$	627,192
Gross profit	50,421			69,647		100,040			66,621			286,729
Income from operations	(1,705		)	11,709		38,622			3,913			52,539
Income tax (benefit) / expense	(1,265		)	7,045		7,519			(5,661		)	7,638
Net income	$	(91	)	$	5,089	$	31,785		$	10,329		$	47,112
Net income per share (1):
Basic	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Diluted	$	—		$	0.07	$	0.45		$	0.15		$	0.67
Weighted average shares outstanding:
Basic	70,738			70,389		70,379			70,404			70,477
Diluted	70,738			70,634		70,843			71,017			70,841

(1) EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

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BASIS OF PRESENTATION (Inventories) (Narrative) (Details)	12 Months Ended
	Sep. 30, 2017
Equipment [Member]
Inventory [Line Items]
Reserves For Inventory In Excess Of Demand Inventory Future Consumption Period	18 months
Spare Parts [Member]
Inventory [Line Items]
Reserves For Inventory In Excess Of Demand Inventory Future Consumption Period	24 months
Expendable Tools [Member]
Inventory [Line Items]
Reserves For Inventory In Excess Of Demand Inventory Future Consumption Period	12 months

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BASIS OF PRESENTATION (Property, Plant and Equipment) (Narrative) (Details)	12 Months Ended
	Sep. 30, 2017
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Leaseholds and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	based on the shorter of the life of lease or life of asset
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

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BASIS OF PRESENTATION (Recent Accounting Pronouncements) (Narrative) (Details) $ in Millions	Oct. 01, 2017 USD ($)
Pro Forma [Member] | Accounting Standards Update 2016-09, Excess Tax Benefit Component [Member] | Accumulated Income (Deficit) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Anticipated cumulative effect of adoption of ASU	$ 5.4

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RESTRUCTURING - Summary of Restructuring Activities (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]
Provision for severance and benefits	[1]	$ 3,311	$ 8,644
Payment of severance and benefits		(5,245)	(3,620)
Accrual for estimated severance and benefits, end of period	[2]	4,628	6,562	$ 1,538
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Provision for severance and benefits	[1]	3,273	661	1,850
Payment of severance and benefits		(418)	(2,162)	(312)
Accrual for estimated severance and benefits, end of period	[2]	2,892	37	1,538	$ 0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Provision for severance and benefits	[1]	38	7,983
Payment of severance and benefits		(4,827)	(1,458)
Accrual for estimated severance and benefits, end of period	[2]	$ 1,736	$ 6,525	$ 0

[1] Provision for severance and benefits and other exit costs are included within selling, general and administrative expenses on the Consolidated Statements of Operations.

[2] Included within accrued expenses and other current liabilities on the Consolidated Balance Sheets.

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RESTRUCTURING - Narrative (Details) - EA/APMR [Member] $ in Millions	12 Months Ended
	Sep. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Total Restructuring Costs	$ 3.8
Severance Costs	3.3
Other Restructuring Costs	$ 0.5

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BALANCE SHEET COMPONENTS (Components of significant balance sheet accounts) (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Oct. 01, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Short-term Investments	[1]	$ 216,000	$ 124,000	[2]
Inventories, net:
Raw materials and supplies	[3]	44,239	26,876
Work in process	[3]	40,827	24,333
Finished goods	[3]	61,596	57,166
Inventory, gross		146,662	108,375
Inventory reserves		(24,639)	(21,080)
Inventories, net		122,023	87,295
Property, plant and equipment, net:
Land		2,182	0
Buildings and building improvements		50,910	34,472
Leasehold improvements		9,882	19,963
Data processing equipment and software	[3]	34,700	32,975
Machinery, equipment, furniture and fixtures		68,143	54,730
Property, plant and equipment, gross		165,817	142,140
Accumulated depreciation	[3]	(98,055)	(91,798)
Property, plant and equipment, net		67,762	50,342
Accrued expenses and other current liabilities:
Wages and benefits		47,411	24,248
Accrued customer obligations (1)	[2]	50,497	13,077
Commissions and professional fees		8,555	10,908
Deferred rent		1,930	2,920
Severance (2)	[4]	3,828	1,296
Other		20,093	11,505
Accrued expenses and other current liabilities		$ 132,314	$ 63,954

[1] All short-term investments were classified as available-for-sale and were measured at fair value based on level one measurement, or quoted market prices, as defined by ASC 820. As of September 30, 2017 and October 1, 2016, fair value approximated the cost basis for short-term investments. The Company did not recognize any realized gains or losses on the sale of investments during the years ended 2017 and 2016.

[2] Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

[3] Certain balances as at October 1, 2016 relating to Inventories and Property, plant and equipment have been reclassified for comparative purposes. These reclassifications have no impact to the Consolidated Balance Sheets as at October 1, 2016.

[4] Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.2 million (as of Oct 1, 2016: $0.8 million), and other severance payments which are not part of the Company's plan to streamline its global operations and functions.

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BALANCE SHEET COMPONENTS (Narrative) (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Severance	[1]	$ 3,828	$ 1,296
CEO Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance		$ 200	$ 800

[1] Includes the restructuring plan discussed in Note 2, severance payable in connection with the October 2015 retirement of the Company's CEO of $0.2 million (as of Oct 1, 2016: $0.8 million), and other severance payments which are not part of the Company's plan to streamline its global operations and functions.

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BUSINESS COMBINATION - Narrative (Details) € in Millions, $ in Millions					12 Months Ended
	Jul. 02, 2017 USD ($)	Jul. 02, 2017 EUR (€)	Jan. 09, 2015 USD ($)	Jan. 09, 2015 EUR (€)	Oct. 03, 2015 USD ($)	Oct. 01, 2016 USD ($)	Oct. 01, 2016 EUR (€)
Liteq B.V. [Member]
Business Acquisition [Line Items]
Consideration transferred	$ 28.6	€ 25.0
Net loss contributed	1.4
Acquisition-related expenses incurred	$ 0.3
Assembléon [Member]
Business Acquisition [Line Items]
Consideration transferred			$ 97.4	€ 80.0
Cash consideration paid to acquire equity			72.5
Cash consideration used to settle acquiree's intercompany loans			$ 24.9
Escrow Deposit						$ 8.7	€ 7.7
Revenue contributed					$ 59.3
Net loss contributed					2.0
Selling, General and Administrative Expenses [Member] | Assembléon [Member]
Business Acquisition [Line Items]
Acquisition-related expenses incurred					$ 0.9

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BUSINESS COMBINATION - Acquired Assets and Liabilities Allocation Table (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jul. 02, 2017	Oct. 01, 2016	[1]	Jan. 09, 2015
Business Acquisition [Line Items]
Goodwill	$ 56,318		$ 81,272
Liteq B.V. [Member]
Business Acquisition [Line Items]
Prepaid expenses and other current assets		$ 199
Property, plant and equipment		107
Intangibles		18,060
Goodwill		10,253
Accounts payable		(157)
Accrued expenses and other current liabilities		(103)
Deferred tax liabilities		(1,240)
Total purchase price, net of cash acquired		$ 27,119
Assembléon [Member]
Business Acquisition [Line Items]
Accounts receivable					$ 9,941
Inventories					19,861
Prepaid expenses and other current assets					2,322
Deferred Tax Assets					157
Property, plant and equipment					531
Intangibles					61,463
Goodwill					39,726
Deferred income taxes					638
Accounts payable					(14,386)
Borrowings financial institutions					9,491
Accrued expenses and other current liabilities					(10,561)
Income taxes payable					(1,933)
Deferred tax liabilities					(5,115)
Total purchase price, net of cash acquired					$ 93,153

[1] Balances have been recasted due to the operating and reportable segments realignment.

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BUSINESS COMBINATION - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Assembléon [Member]
Business Acquisition [Line Items]
Revenue			$ 562,754
Net income / (loss)			$ 45,303
Basic income per common share (in dollars per share)			$ 0.60
Diluted income per common share (in dollars per share)			$ 0.60
Liteq B.V. [Member]
Business Acquisition [Line Items]
Revenue	$ 809,041	$ 627,192
Net income / (loss)	$ 105,966	$ 41,186
Basic income per common share (in dollars per share)	$ 1.49	$ 0.58
Diluted income per common share (in dollars per share)	$ 1.47	$ 0.58

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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 01, 2017 USD ($)	Jul. 01, 2017	Sep. 30, 2017 USD ($) reporting_unit	Oct. 01, 2016 USD ($)	Oct. 03, 2015 USD ($)
Goodwill [Line Items]
Impairment Charges | $			$ 35,207	$ 0	$ 0
Number of Reporting Units			5
Assembléon [Member]
Goodwill [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate		2.50%
Fair Value Inputs, Discount Rate		10.45%
Impairment Charges | $	$ 35,200
Capital Equipment [Member]
Goodwill [Line Items]
Number of Reporting Units			2
Aftermarket Products and Services [Member]
Goodwill [Line Items]
Number of Reporting Units			3

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GOODWILL AND INTANGIBLE ASSETS (Recorded Goodwill) (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 81,272	[1]
Acquired in business combination	10,253
Goodwill impairment	(35,207)
Ending balance	56,318
Aftermarket Products and Services [Member]
Goodwill [Roll Forward]
Beginning balance	47,819	[1]
Acquired in business combination	0
Goodwill impairment	(21,476)
Ending balance	26,343
Capital Equipment [Member]
Goodwill [Roll Forward]
Beginning balance	33,453	[1]
Acquired in business combination	10,253
Goodwill impairment	(13,731)
Ending balance	$ 29,975

[1] Balances have been recasted due to the operating and reportable segments realignment.

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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Finite-Lived Intangible Assets [Line Items]
Net intangible assets	$ 62,316	$ 50,810
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	74,080	74,080
Acquired in business acquisition	18,060	0
Accumulated amortization	(41,162)	(37,969)
Net intangible assets	50,978	36,111
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	36,968	36,968
Accumulated amortization	(27,398)	(24,455)
Net intangible assets	9,570	12,513
Trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	7,515	7,515
Accumulated amortization	(5,747)	(5,329)
Net intangible assets	1,768	2,186
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	2,500	2,500
Accumulated amortization	(2,500)	(2,500)
Net intangible assets	$ 0	$ 0
Average estimated useful lives (in years)	1 year 10 months 24 days
Minimum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	7 years
Minimum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	5 years
Minimum [Member] | Trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	7 years
Maximum [Member] | Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	15 years
Maximum [Member] | Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	6 years
Maximum [Member] | Trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years

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GOODWILL AND INTANGIBLE ASSETS (Estimated annual amortization expense) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Fiscal 2018	$ 7,892
Fiscal 2019	7,892
Fiscal 2020	7,892
Fiscal 2021	5,684
Fiscal 2022 and thereafter	32,956
Total amortization expense	$ 62,316

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CASH, CASH EQUIVALENTS, RESTRICTED CASH AND SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Cash and Cash Equivalents [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		$ 608,940	$ 547,907
Short-term investments		216,000	124,000
Cash and cash equivalents, Amortized Cost		392,410	423,907	$ 498,614	$ 587,981
Restricted cash	[1]	530	0
Demand Deposits [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	[2]	96,000	0
Cash [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, Amortized Cost		65,759	118,335
Cash equivalents, Money market funds [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, Amortized Cost	[1]	232,069	152,961
Cash equivalents, Time deposits [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	[3]	120,000	124,000
Cash and cash equivalents, Amortized Cost	[1],[3]	89,087	133,611
Commercial Paper [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, Amortized Cost	[1]	$ 5,495	$ 19,000

[1] Fair value approximates cost basis.

[2] Represents deposits that require a notice period of three months for withdrawal.

[3] Certain time deposits as at October 1, 2016 have been corrected from cash equivalents to short-term investments for comparative purposes.

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EQUITY INVESTMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Schedule of Equity Method Investments [Line Items]
Income (Loss) from Equity Method Investments	$ 190	$ 0	$ 0
Equity investments	$ 1,502	$ 0

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DERIVATIVE FINANCIAL INSTRUMENT (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2017	Oct. 01, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer		12 months
Derivative, Notional Amount		$ 36,404	$ 28,997
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount		$ 36,404	28,997
Derivative, Term of Contract		12 months
Other Comprehensive Income (Loss) [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	[1]	$ 669	(566)
Selling, General and Administrative Expenses [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	(1,146)	(104)
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	[3]	0	0
Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	[4],[5]	1,353
Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	[4],[5]	$ 1,353
Other Current Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value Liability Derivatives	[4],[6]		462
Other Current Liabilities [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value Liability Derivatives	[4],[6]		$ 462

[1] Net change in the fair value of the effective portion classified in other comprehensive income (“OCI”).

[2] Effective portion classified as selling, general and administrative expense.

[3] Ineffective portion and amount excluded from effectiveness testing classified in selling, general and administrative expense.

[4] Hedged amounts expected to be recognized to income within the next twelve months.

[5] The fair value of derivative assets is measured using level 2 fair value inputs and is included in prepaid expenses and other current assets on our Consolidated Balance Sheet.

[6] The fair value of derivative liabilities is measured using level 2 fair value inputs and is included in accrued expenses and other current liabilities on our Consolidated Balance Sheet.

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DEBT AND OTHER OBLIGATIONS (Narrative) (Details)		12 Months Ended
	Mar. 21, 2016 USD ($)	Sep. 30, 2017 USD ($) renewal_option	Oct. 01, 2016 USD ($)	Dec. 01, 2013 USD ($) ft²	Nov. 22, 2013 USD ($)
Debt Instrument [Line Items]
Area of Land | ft²				198,000
Percentage Of Building Area Agreed To Lease From Landlord				70.00%
Financing obligation		$ 16,074,000	$ 16,701,000	$ 20,000,000
K&S Corporate Headquarters [Member]
Debt Instrument [Line Items]
Lessee Leasing Arrangements, Capital Leases, Renewal Term		10 years
Annual Rent and Service Charge Minimum Range		$ 4,000,000
Annual Rent and Service Charge Maximum Range		$ 5,000,000
Lessee Leasing Arrangements, Capital Leases, Term of Contract		10 years
Lessee Leasing Arrangements, Capital Leases, Number of Renewal Options | renewal_option		2
Capital Lease Obligations, Interest Rate, Effective Percentage		6.30%
Building [Member]
Debt Instrument [Line Items]
Property, Plant and Equipment, Useful Life		25 years
Citibank [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 5,000,000
Long-term Line of Credit		$ 3,200,000
Revolving Credit Facility [Member] | United Overseas Bank Limited [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Mar. 20, 2018
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000,000
Line of Credit Facility, Expiration Period	1 year
Long-term Line of Credit		0
Current and Noncurrent Portion [Member]
Debt Instrument [Line Items]
Financing obligation		$ 16,800,000

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Matching contributions to the Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Cash	$ 1,645	$ 1,544

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Accumulated other comprehensive income) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Oct. 01, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Gain/(Loss) from foreign currency translation adjustments	$ 2,422	$ 462
Unrecognized actuarial loss, Switzerland pension plan, net of tax	(1,736)	(2,726)
Accumulated other comprehensive income	2,039	(2,726)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ 1,353	$ (462)

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jul. 02, 2016	Sep. 30, 2017	Oct. 01, 2016		Oct. 03, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		$ 11,722	$ 5,730	[1]	$ 11,989
Market-based restricted stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		3,480	(33)		4,677
Time-based restricted stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		7,492	5,255		6,129
Performance-based restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		0	(43)		131
Stock options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		0	0		3
Common stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		750	551		1,049
Cost of sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		463	421		393
Selling, general and administrative (1) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		9,015	3,244	[2]	9,127
Selling, general and administrative (1) [Member] | Forfeiture of Stock Awards [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)	$ (2,000)
Research and development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total equity-based compensation expense (reversal)		$ 2,244	$ 2,065		$ 2,469

[1] The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

[2] The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Employee market-based restricted stock activity) (Details) - Market-based restricted stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of shares, Restricted stock outstanding, beginning balance (in shares)	484	578	1,068
Number of shares, Granted (in shares)	388	172	232
Number of shares, Forfeited or expired (in shares)	(3)	(256)	(48)
Number of shares, Vested (in shares)	(196)	(10)	(674)
Number of shares, Restricted stock outstanding, ending balance (in shares)	673	484	578	1,068
Unrecognized compensation expense	$ 6,204	$ 2,924	$ 4,465	$ 5,271
Average remaining service period (in years)	1 year 4 months 15 days	1 year 15 days	1 year 5 months	1 year
Weighted average grant date fair value per share	$ 13.47	$ 12.26	$ 16.83

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Employee time-based restricted stock activity) (Details) - Time-based restricted stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of shares, Restricted stock outstanding, beginning balance (in shares)	1,015	849	1,057
Number of shares, Granted (in shares)	715	597	484
Number of shares, Forfeited or expired (in shares)	(50)	(85)	(29)
Number of shares, Vested (in shares)	(600)	(346)	(663)
Number of shares, Restricted stock outstanding, ending balance (in shares)	1,080	1,015	849	1,057
Unrecognized compensation expense	$ 7,770	$ 6,440	$ 7,054	$ 6,720
Average remaining service period (in years)	1 year 5 months 15 days	1 year 5 months 15 days	1 year 7 months 6 days	1 year 5 months
Weighted average grant date fair value per share	$ 13.32	$ 9.66	$ 14.06

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Employee performance-based restricted stock activity) (Details) - Performance-based restricted stock - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of shares, Restricted stock outstanding, beginning balance (in shares)	0	57	57
Number of shares, Granted (in shares)	0	0	0
Number of shares, Forfeited or expired (in shares)	0	(29)
Number of shares, Restricted stock outstanding, ending balance (in shares)	0	0	57	57
Unrecognized compensation expense	$ 0	$ 0	$ 285	$ 419
Average remaining service period (in years)	0 years		2 years 2 months	3 years 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	0	(28)

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Employee stock option activity) (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares, Options outstanding, beginning balance (in shares)	90	147	220
Number of shares, Exercised (in shares)	(61)	(53)	(45)
Number of shares, Forfeited or expired (in shares)	(13)	(4)	(28)
Number of shares, Options outstanding, ending balance (in shares)	16	90	147
Number of shares, Options vested and expected to vest (in shares)	16
Number of shares, Options exercisable (in shares)	16
Number of shares, In the money exercisable options (in shares)	16
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, Options outstanding, beginning balance (in dollars per share)	$ 8.41	$ 8.18	$ 8.14
Weighted average exercise price, Exercised (in dollars per share)	8.31	5.40	8.58
Weighted average exercise price, Forfeited or expired (in dollars per share)	8.50	9.00	7.25
Weighted average exercise price, Options outstanding, ending balance (in dollars per share)	8.73	$ 8.41	$ 8.18
Weighted average exercise price, Options vested and expected to vest (in dollars per share)	8.73
Weighted average exercise price, Options exercisable (in dollars per share)	$ 8.73
Average remaining contractual life, Options outstanding (in years)	3 months 7 days
Average remaining contractual life, Options vested and expected to vest (in years)	3 months 7 days
Average remaining contractual life, Options exercisable (in years)	3 months 7 days
Aggregate intrinsic value, Exercised	$ 531	$ 330	$ 282
Aggregate intrinsic value, Options outstanding	200
Aggregate intrinsic value, Options vested and expected to vest	200
Aggregate intrinsic value, In the money exercisable options	$ 200

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Outstanding and exercisable employee stock options) (Details) - Stock Options One [Member] shares in Thousands	12 Months Ended
	Sep. 30, 2017 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit	$ 8.64
Range of exercise prices, upper limit	$ 8.74
Options Outstanding | shares	16
Options Outstanding, Weighted average remaining contractual life (in years)	3 months 7 days
Options Outstanding, Weighted average exercise price	$ 8.73
Options Exercisable | shares	16
Options Exercisable, Weighted average exercise price	$ 8.73

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Common stock issued to non-employee directors) (Details) - Non Employee Director [Member] - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of common shares issued		50	83
Fair value based upon market price at time of issue	$ 750	$ 551	$ 1,049

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Non-employee director stock option activity) (Details) - Non Employee Director [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares, Options outstanding, beginning balance (in shares)	0	20	55
Number of shares, Exercised (in shares)	0	0	(30)
Number of shares, Forfeited or expired (in shares)	0	(20)	(5)
Number of shares, Options outstanding, ending balance (in shares)	0	0	20
Number of shares, Options vested and expected to vest (in shares)	0
Number of shares, Options exercisable (in shares)	0
Number of shares, In the money exercisable options (in shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, Options outstanding, beginning balance (in dollars per share)	$ 0.00	$ 11.20	$ 10.22
Weighted average exercise price, Exercised (in dollars per share)	0	0.00	10.19
Weighted average exercise price, Forfeited or expired (in dollars per share)	0.00	11.00	6.48
Weighted average exercise price, Options outstanding, ending balance (in dollars per share)	0.00	$ 0.00	$ 11.20
Weighted average exercise price, Options vested and expected to vest (in dollars per share)	0.00
Weighted average exercise price, Options exercisable (in dollars per share)	$ 0.00
Average remaining contractual life, Options outstanding (in years)	0 years
Average remaining contractual life, Options vested and expected to vest (in years)	0 years
Average remaining contractual life, Options exercisable (in years)	0 years
Aggregate intrinsic value, Options outstanding	$ 0	$ 0	$ 225	$ 225
Aggregate intrinsic value, Options vested and expected to vest	0
Aggregate intrinsic value, In the money exercisable options	$ 0

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Defined benefits pension obligations and pension expenses) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Oct. 01, 2016
Defined Benefit Plan Disclosure [Line Items]
Pension obligation	$ 2,918	$ 3,318
Foreign Pension Plan, Defined Benefit [Member] | Switzerland [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension obligation	1,951	2,393
Foreign Pension Plan, Defined Benefit [Member] | Taiwan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension obligation	$ 967	$ 925

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Narrative) (Details) shares in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($) shares	Sep. 30, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description Of Maximum Percentage Of Employee Contributions and Matching Contributions Based Upon Years Of Service		employee contributions and matching Company contributions from 4% to 6%
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date		100.00%
Relative Total Shareholder Return Average Stock Price Calculation Period		90 days
Total Shareholder Return Award Performance Measurement Period		3 years
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options		$ 500,000
Grant To Non Employee Director	$ 32,500	$ 120,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent		4.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage	0.00%	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent		6.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage	200.00%	200.00%
Equity Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares	5.1	5.1

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Assumptions Used to Calculate Compensation Expense) (Details) - Performance-based restricted stock - $ / shares	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price	$ 12.51	$ 9.58	$ 14.02
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	30.39%	30.85%	35.48%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.96%	0.89%	0.89%

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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS Share Repurchase Program (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Aug. 15, 2017
Share Repurchases [Line Items]
Treasury Stock, Shares, Acquired	944,840.00
Stock Repurchased During Period, Value	$ 18,200
Payments for Repurchase of Common Stock	18,197	$ 14,551	$ 75,715
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 88,800
August 2017 Share Repurchase Program [Member]
Share Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount				$ 100,000
Stock Repurchase Program, Period	3 years

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EARNINGS PER SHARE (Reconciliation of the shares used in the basic and diluted net income per share computation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Sep. 30, 2017		Jul. 01, 2017		Apr. 01, 2017		Dec. 31, 2016		Oct. 01, 2016		Jul. 02, 2016		Apr. 02, 2016		Jan. 02, 2016		Sep. 30, 2017		Oct. 01, 2016		Oct. 03, 2015
NUMERATOR:
Net income	$ 36,576		$ 30,811		$ 29,041		$ 15,583		$ 10,329		$ 31,785		$ 5,089		$ (91)		$ 112,011		$ 47,112		$ 50,639
DENOMINATOR:
Weighted average shares outstanding - Basic (in shares)	70,742		71,063		70,964		70,854		70,404		70,379		70,389		70,738		70,906		70,477		75,414
Stock options (in shares)																	19		32		70
Time-based restricted stock (in shares)																	592		274		175
Market-based restricted stock (in shares)																	546		58		0
Weighted average shares outstanding - Diluted (1)	72,071		72,483		72,270		71,763		71,017		70,843		70,634		70,738		72,063		70,841		75,659
EPS:
Net income per share - Basic (in dollars per share)	$ 0.52	[1]	$ 0.43	[1]	$ 0.41	[1]	$ 0.22	[1]	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 1.58	[1]	$ 0.67	[1]	$ 0.67
Effect of dilutive shares (in dollars per share)																	(0.03)		0.00		0.00
Net income per share - Diluted (in dollars per share)	$ 0.51	[1]	$ 0.43	[1]	$ 0.40	[1]	$ 0.22	[1]	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 1.55	[1]	$ 0.67	[1]	$ 0.67

[1] EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

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INCOME TAXES (Income from continuing operations by location, the provision (benefit) for income taxes and the effective tax rate) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Income Tax Disclosure [Abstract]
United States operations									$ (4,114)	$ (12,600)	$ 4,178
Foreign operations									107,800	67,350	33,527
Income from operations before income taxes									103,686	54,750	37,705
Income tax expense/(benefit)	$ 2,242	$ (17,867)	$ 4,882	$ 2,608	$ (5,661)	$ 7,519	$ 7,045	$ (1,265)	$ (8,135)	$ 7,638	$ (12,934)
Effective tax rate									(7.80%)	14.00%	(34.30%)

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INCOME TAXES (Provision (benefit) for income taxes from continuing operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Current:
Federal									$ (3,975)	$ 871	$ 1,459
State									64	53	76
Foreign									13,290	21,841	4,707
Deferred:
Federal									(15,374)	(13,423)	(20,250)
State									40	12	(10)
Foreign									(2,180)	(1,716)	1,084
Provision for income taxes	$ 2,242	$ (17,867)	$ 4,882	$ 2,608	$ (5,661)	$ 7,519	$ 7,045	$ (1,265)	$ (8,135)	$ 7,638	$ (12,934)

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INCOME TAXES (Effective income tax rate reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Income Tax Disclosure [Abstract]
Computed income tax expense based on U.S. statutory rate									$ 36,290	$ 19,163	$ 13,197
Effect of earnings of foreign subsidiaries subject to different tax rates									(20,226)	(7,330)	(6,103)
Benefits from foreign approved enterprise zones									(21,556)	(8,531)	(5,855)
Benefits from research and development tax credits (including prior years)									(1,859)	(2,839)	(4,090)
Benefits from foreign tax credits									(26,119)	0	0
Change in permanent reinvestment assertion									0	(9,696)	(19,704)
Tax impact on restructuring									0	4,238	0
Tax audit settlement									0	4,889	0
Effect of permanent items									778	(2,274)	1,822
Non-deductible goodwill impairment									8,805	0	0
Changes in valuation allowance									6,458	3,585	2,634
Foreign operations (withholding taxes, deferred taxes on unremitted earnings, US taxation of foreign earnings)									6,039	4,981	4,904
Reserve for uncertain tax positions									2,936	208	886
State income tax expense									60	996	(1,543)
Other, net									259	248	918
Provision for income taxes	$ 2,242	$ (17,867)	$ 4,882	$ 2,608	$ (5,661)	$ 7,519	$ 7,045	$ (1,265)	$ (8,135)	$ 7,638	$ (12,934)

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INCOME TAXES (Net deferred tax balance) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Oct. 01, 2016
Income Tax Disclosure [Abstract]
Inventory reserves	$ 589	$ 546
Stock options	422	647
Other accruals and reserves	8,230	4,937
Domestic tax credit carryforwards	17,635	8,011
Net operating loss carryforwards	35,937	31,817
Deferred Tax Assets, Gross	62,813	45,958
Valuation allowance	(29,614)	(27,381)
Total long-term deferred tax asset (1)	33,199	18,577
Repatriation of foreign earnings, including foreign withholding taxes	20,945	20,119
Depreciable assets	11,262	9,333
Total long-term deferred tax liability	32,207	29,452
Deferred Tax Assets, Net	992
Total net deferred tax liability		(10,875)
Deferred tax asset	27,771	16,822
Deferred tax liability	$ 26,779	$ 27,697

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INCOME TAXES (Unrecognized tax benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit, beginning of year	$ 7,453	$ 7,101	$ 7,192
Additions for tax positions, current year	3,657	519	0
Additions for tax positions, prior year	1,834	827	5,140
Reductions for tax positions, prior year	(882)	(994)	(5,231)
Unrecognized tax benefit, end of year	$ 12,062	$ 7,453	$ 7,101

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INCOME TAXES (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Change in permanent reinvestment assertion	$ 0	$ (9,696)	$ (19,704)
Tax impact on restructuring	0	4,238	0
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	619,900
Deferred Tax Liabilities, Undistributed Foreign Earnings	21,000
Undistributed Earnings Not Reinvested In Foreign Operations	500
Foreign Earnings Repatriated	200
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	95,800
Deferred Tax Assets, Tax Credit Carryforwards	4,900
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	11,200
Excess tax benefits from stock based compensation	(4,392)	197	540
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	882	994	5,231
Unrecognized Tax Benefits	12,062	7,453	7,101	$ 7,192
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	165,800
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	24,300
Operations In Singapore And Malaysia [Member]
Operating Loss Carryforwards [Line Items]
Income Tax Reconciliation, Tax Exempt Income	$ 21,600	$ 8,500	$ 5,900
Income Tax Reconciliation Foreign Income Tax Rate Differential Per Share	$ 0.30	$ 0.12	$ 0.08
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforward, Foreign, Statute Of Limitions	4 years
Minimum [Member] | Operations In Singapore And Malaysia [Member]
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential			0.00%
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforward, Foreign, Statute Of Limitions	6 years
Maximum [Member] | Operations In Singapore And Malaysia [Member]
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential	5.00%
Pennsylvania Tax Law [Member]
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 5,000	$ 0	$ 4,000	$ 4,000

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OTHER FINANCIAL DATA Other Financial Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Incentive Compensation Expense	$ 29,612	$ 14,661	$ 10,768
Rent Expense	5,071	5,901	5,006
Warranty and Retrofit Expense	$ 12,219	$ 4,599	$ 2,808

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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Net revenue:
Net revenue		$ 215,892	$ 243,897	$ 199,613	$ 149,639	$ 145,844	$ 216,414	$ 156,400	$ 108,534	$ 809,041	$ 627,192	$ 536,471
Cost of sales :
Cost of sales										433,995	340,463	277,379
Gross profit :
Gross profit		104,739	111,698	90,291	68,318	66,621	100,040	69,647	50,421	375,046	286,729	259,092
Operating expenses:
Operating expenses										276,792	234,190	221,841
Income from operations:
Income from operations		$ 36,904	$ 11,464	$ 32,605	$ 17,281	$ 3,913	$ 38,622	$ 11,709	$ (1,705)	98,254	52,539	37,251
Restructuring expenses	[1]									3,311	8,644
Capital Equipment [Member]
Net revenue:
Net revenue										651,934	488,925	411,099
Income from operations:
Income from operations	[2]									92,286	32,070	11,114
Restructuring expenses										2,400	6,000	1,500
APS [Member]
Net revenue:
Net revenue										157,107	138,267	125,372
Income from operations:
Income from operations	[3]									5,968	20,469	26,137
Restructuring expenses										$ 900	$ 2,400	$ 400

[1] Provision for severance and benefits and other exit costs are included within selling, general and administrative expenses on the Consolidated Statements of Operations.

[2] Includes the restructuring expenses as discussed in Note 2, of $2.4 million, $6.2 million and $1.5 million for the years ended 2017, 2016 and 2015 respectively.

[3] Includes the restructuring expenses as discussed in Note 2, of $0.9 million, $2.4 million and $0.4 million for the years ended 2017, 2016 and 2015 respectively

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SEGMENT INFORMATION (Capital expenditures, depreciation, and amortization expense by segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Capital expenditures:
Capital expenditures	$ 25,688	$ 6,301	$ 9,519
Depreciation expense:
Depreciation expense	9,703	9,569	9,089
Amortization expense:
Amortization expense	6,554	6,661	9,883
Capital Equipment [Member]
Capital expenditures:
Capital expenditures	14,415	3,111	6,592
Depreciation expense:
Depreciation expense	6,306	6,012	6,075
Amortization expense:
Amortization expense	2,841	2,760	4,291
APS [Member]
Capital expenditures:
Capital expenditures	11,273	3,190	2,927
Depreciation expense:
Depreciation expense	3,397	3,557	3,014
Amortization expense:
Amortization expense	$ 3,713	$ 3,901	$ 5,592

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SEGMENT INFORMATION (Narrative) (Details)	12 Months Ended
	Sep. 30, 2017 segment
Segment Reporting [Abstract]
Number of reportable segments	2
Segment Reporting Information [Line Items]
Number of operating segments	12
Capital Equipment [Member]
Segment Reporting Information [Line Items]
Number of operating segments	6
Aftermarket Products and Services [Member]
Segment Reporting Information [Line Items]
Number of operating segments	6

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SEGMENT INFORMATION Sales by country (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net	$ 215,892	$ 243,897	$ 199,613	$ 149,639	$ 145,844	$ 216,414	$ 156,400	$ 108,534	$ 809,041	$ 627,192	$ 536,471
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									323,803	211,448	169,557
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									100,738	129,128	56,610
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									73,410	70,593	40,687
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									72,329	42,368	48,825
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									57,728	47,806	47,220
Philippines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									25,165	8,272	42,575
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									21,224	28,256	31,413
All Other Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Net									$ 134,644	$ 89,321	$ 99,584

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SEGMENT INFORMATION Long-lived assets by countries (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 97,589	$ 69,420	$ 58,354
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	43,440	18,570	7,429
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	31,553	33,286	36,754
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	11,148	7,459	7,386
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	4,549	4,810	3,701
All Other Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 6,899	$ 5,295	$ 3,084

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Reserve for product warranty activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Commitments and Contingencies Disclosure [Abstract]
Standard Product Warranty Accrual, Additions from Business Acquisition	$ 0	$ 0	$ 547
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Reserve for product warranty, beginning of period	4,138	1,856	1,542
Provision for product warranty	10,404	4,816	2,614
Product warranty costs paid	(2,709)	(2,534)	(2,847)
Reserve for product warranty, end of period	$ 11,833	$ 4,138	$ 1,856

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Obligations not reflected on the Consolidated Balance Sheet) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Inventory purchase obligation	$ 106,084	[1]
Inventory purchase obligation, Payments due by fiscal year 2018	106,084	[1]
Inventory purchase obligation, Payments due by fiscal year 2019	0	[1]
Inventory purchase obligation, Payments due by fiscal year 2020	0	[1]
Inventory purchase obligation, Payments due by fiscal year 2021	0	[1]
Inventory purchase obligation, Payments due by fiscal year thereafter	0	[1]
Operating lease obligations	19,958	[2]
Operating lease obligations, Payments due by fiscal year 2018	3,781	[2]
Operating lease obligations, Payments due by fiscal year 2019	2,879	[2]
Operating lease obligations, Payments due by fiscal year 2020	2,556	[2]
Operating lease obligations, Payments due by fiscal year 2021	1,841	[2]
Operating lease obligations, Payments due by fiscal year thereafter	8,901	[2]
Total	126,042
Total, Payments due by fiscal year 2018	109,865
Total, Payments due by fiscal year 2019	2,879
Total, Payments due by fiscal year 2020	2,556
Total, Payments due by fiscal year 2021	1,841
Total, Payments due by fiscal year thereafter	$ 8,901

[1] The Company orders inventory components in the normal course of its business. A portion of these orders are non-cancelable and a portion may have varying penalties and charges in the event of cancellation.

[2] The Company has minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by the Company) primarily for various facility and equipment leases, which expire periodically through 2018 (not including lease extension options, if applicable). Pursuant to ASC No. 840, Leases, for lessee's involvement in asset construction, the Company was considered the owner of the Building during the construction phase. The Building was completed on December 1, 2013 and Pte signed an agreement with the Landlord to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of the Building. Following the completion of construction, we performed a sale-leaseback analysis pursuant to ASC 840-40 and determined that because of our continuing involvement, ASC 840-40 precluded us from derecognizing the asset and associated financing obligation. As such, we reclassified the asset from construction in progress to Property, Plant and Equipment and began to depreciate the building over its estimated useful life of 25 years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. As of September 30, 2017, we recorded a financing obligation related to the Building of $16.8 million (see Note 10 above). The financing obligation is not reflected in the table above.

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of net revenue) (Details)	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Sales Revenue Net [Member] | Customer Concentration Risk [Member] | Haoseng Industrial Co., Ltd [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage	10.10%	11.50%

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details)	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Haoseng Industrial Co., Ltd [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage	26.20%	20.80%

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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Narrative) (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Dec. 01, 2013 USD ($) ft²
Other Commitments [Line Items]
Area of Land | ft²			198,000
Percentage Of Building Area Agreed To Lease From Landlord			70.00%
Period Of Warranty For Manufacturing Defects	1 year
Lease Expiration Year	2018
Financing obligation	$ 16,074	$ 16,701	$ 20,000
Building [Member]
Other Commitments [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Current and Noncurrent Portion [Member]
Other Commitments [Line Items]
Financing obligation	$ 16,800

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SELECTED QUARTERLY FINANCIAL RESULTS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Sep. 30, 2017		Jul. 01, 2017		Apr. 01, 2017		Dec. 31, 2016		Oct. 01, 2016		Jul. 02, 2016		Apr. 02, 2016		Jan. 02, 2016		Sep. 30, 2017		Oct. 01, 2016		Oct. 03, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenue, Net	$ 215,892		$ 243,897		$ 199,613		$ 149,639		$ 145,844		$ 216,414		$ 156,400		$ 108,534		$ 809,041		$ 627,192		$ 536,471
Gross Profit	(104,739)		(111,698)		(90,291)		(68,318)		(66,621)		(100,040)		(69,647)		(50,421)		(375,046)		(286,729)		(259,092)
Operating Income (Loss)	36,904		11,464		32,605		17,281		3,913		38,622		11,709		(1,705)		98,254		52,539		37,251
Income Tax expense / (benefit)	2,242		(17,867)		4,882		2,608		(5,661)		7,519		7,045		(1,265)		(8,135)		7,638		(12,934)
Net income	$ 36,576		$ 30,811		$ 29,041		$ 15,583		$ 10,329		$ 31,785		$ 5,089		$ (91)		$ 112,011		$ 47,112		$ 50,639
Basic (in dollars per share)	$ 0.52	[1]	$ 0.43	[1]	$ 0.41	[1]	$ 0.22	[1]	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 1.58	[1]	$ 0.67	[1]	$ 0.67
Earnings Per Share, Diluted	$ 0.51	[1]	$ 0.43	[1]	$ 0.40	[1]	$ 0.22	[1]	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 1.55	[1]	$ 0.67	[1]	$ 0.67
Weighted average shares outstanding - Basic (in shares)	70,742		71,063		70,964		70,854		70,404		70,379		70,389		70,738		70,906		70,477		75,414
Weighted Average Number of Shares Outstanding, Diluted	72,071		72,483		72,270		71,763		71,017		70,843		70,634		70,738		72,063		70,841		75,659

[1] EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.

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SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 12, 2017	Sep. 30, 2017	Oct. 01, 2016
Subsequent Event [Line Items]
Derivative, Notional Amount		$ 36,404	$ 28,997
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Subsequent Event [Line Items]
Derivative, Notional Amount		$ 36,404	$ 28,997
Derivative, Term of Contract		12 months
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Derivative, Notional Amount	$ 12,700
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Derivative, Term of Contract	12 months

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Schedule II-Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of period		$ 27,381
End of period		29,614	$ 27,381
Allowance for doubtful accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of period		506	621	$ 143
Charged to Costs and Expenses		(136)	(115)	478
Other Additions		0	0	0
Other Deductions	[1]	(291)	0	0
End of period		79	506	621
Inventory reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of period		21,080	19,073	13,863
Charged to Costs and Expenses		10,925	6,676	3,978
Other Additions		0	0	7,696
Other Deductions	[2]	(7,366)	(4,669)	(6,464)
End of period		24,639	21,080	19,073
Valuation allowance for deferred taxes [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of period		27,381	23,128	24,624
Charged to Costs and Expenses	[3]	0	563	0
Other Additions		2,233	3,690	0
Other Deductions		0	0	(1,496)
End of period		$ 29,614	$ 27,381	$ 23,128

[1] Represents write-offs of specific accounts receivable.

[2] Sale or scrap of previously reserved inventory.

[3] Reflects increase/decrease in the valuation allowance primarily associated with the Company's U.S. and foreign net operating losses and other deferred tax assets.